| Form N-CSR Cover | 6 Months Ended |
| Jun. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | American Funds Insurance Series |
| Entity Central Index Key | 0000729528 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Jun. 30, 2024 |
| Shareholder Report | 6 Months Ended | |
| Jun. 30, 2024 USD ($) Holding | ||
| Shareholder Report [Line Items] | ||
| Document Type | N-CSRS | |
| Amendment Flag | false | |
| Registrant Name | American Funds Insurance Series | |
| Entity Central Index Key | 0000729528 | |
| Entity Investment Company Type | N-1A | |
| Document Period End Date | Jun. 30, 2024 | |
| Global Growth Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Global Growth Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $22 0.41 % * *Annualized | |
| Expenses Paid, Amount | $ 22 | |
| Expense Ratio, Percent | 0.41% | [1] |
| Net Assets | $ 8,234,000,000 | |
| Holdings Count | Holding | 169 | |
| Investment Company, Portfolio Turnover | 28% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $8,234 Total number of portfolio holdings 169 Portfolio turnover rate 28% | |
| Holdings [Text Block] | Portfolio holdings by se e s | |
| Global Growth Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Global Growth Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $ 0.66%* *Annualized | |
| Expenses Paid, Amount | $ 35 | |
| Expense Ratio, Percent | 0.66% | [1] |
| Net Assets | $ 8,234,000,000 | |
| Holdings Count | Holding | 169 | |
| Investment Company, Portfolio Turnover | 28% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $8,234 Total number of portfolio holdings 169 Portfolio turnover rate 28% | |
| Holdings [Text Block] | Portfolio hold ings by et a | |
| American Funds IS 2010 Target Date Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2010 Target Date Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? l $ 0,000 Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $ 0.06 % * *Annualized | |
| Expenses Paid, Amount | $ 3 | |
| Expense Ratio, Percent | 0.06% | [1] |
| Net Assets | $ 574,000,000 | |
| Holdings Count | Holding | 18 | |
| Investment Company, Portfolio Turnover | 3% | |
| Additional Fund Statistics [Text Block] | Key fund s tati Fund net assets (in millions) $ Total number of portfolio holdings 18 Portfolio turnover rate 3 % | |
| Holdings [Text Block] | Portfolio h old u Fixed income funds 50.09 % Equity-income funds 24.38 % Growth-and-income funds 16.41 % Balanced funds 9.20 % Other assets le (0.08 ) % Total 100.00 % | |
| American Funds IS 2010 Target Date Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2010 Target Date Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $ 0.56 % * *Annualized | |
| Expenses Paid, Amount | $ 28 | |
| Expense Ratio, Percent | 0.56% | [1] |
| Net Assets | $ 574,000,000 | |
| Holdings Count | Holding | 18 | |
| Investment Company, Portfolio Turnover | 3% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 18 Portfolio turnover rate 3 % | |
| Holdings [Text Block] | Portfolio holdings by fund type Fixed income funds 50.09 % Equity-income funds 24.38 % Growth-and-income funds 16.41 % Balanced funds 9.20 % Other assets less liabilities (0.08 ) % Total 100.00 % | |
| American Funds IS 2015 Target Date Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2015 Target Date Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2015 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $ 0.06 % * *Annualized | |
| Expenses Paid, Amount | $ 3 | |
| Expense Ratio, Percent | 0.06% | [1] |
| Net Assets | $ 48,000,000 | |
| Holdings Count | Holding | 21 | |
| Investment Company, Portfolio Turnover | 4% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 21 Portfolio turnover rate 4 % | |
| Holdings [Text Block] | Portfolio ho ld ce Fixed income funds 49.54 % Growth-and-income funds 20.21 % Equity-income funds 18.91 % Balanced funds 11.11 % Growth funds 0.30 % Other assets less liabilities (0.07 ) % Total 100.00 % | |
| American Funds IS 2015 Target Date Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2015 Target Date Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2015 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $ 0.56 % * *Annualized | |
| Expenses Paid, Amount | $ 28 | |
| Expense Ratio, Percent | 0.56% | [1] |
| Net Assets | $ 48,000,000 | |
| Holdings Count | Holding | 21 | |
| Investment Company, Portfolio Turnover | 4% | |
| Additional Fund Statistics [Text Block] | Key fund st ati Fund net assets (in millions) $ Total number of portfolio holdings 21 Portfolio turnover rate 4 % | |
| Holdings [Text Block] | Portfolio holdings by fund type ent Fixed income funds 49.54 % Growth-and-income funds 20.21 % Equity-income funds 18.91 % Balanced funds 11.11 % Growth funds 0.30 % Other assets less liabilities (0.07 ) % Total 100.00 % | |
| American Funds IS 2010 Target Date Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2010 Target Date Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $ 0.06 % * *Annualized | |
| Expenses Paid, Amount | $ 3 | |
| Expense Ratio, Percent | 0.06% | [1] |
| Net Assets | $ 574,000,000 | |
| Holdings Count | Holding | 18 | |
| Investment Company, Portfolio Turnover | 3% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 18 Portfolio turnover rate 3 % | |
| Holdings [Text Block] | Portfolio holdings by f u erc Fixed income funds 50.09 % Equity-income funds 24.38 % Growth-and-income funds 16.41 % Balanced funds 9.20 % Other assets less liabilities (0.08 ) % Total 100.00 % | |
| American Funds IS 2010 Target Date Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2010 Target Date Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $ 0.06 % * *Annua li | |
| Expenses Paid, Amount | $ 3 | |
| Expense Ratio, Percent | 0.06% | [1] |
| Net Assets | $ 574,000,000 | |
| Holdings Count | Holding | 18 | |
| Investment Company, Portfolio Turnover | 3% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 18 Portfolio turnover rate 3 % | |
| Holdings [Text Block] | Portfolio holdings by fun d ty Fixed income funds 50.09 % Equity-income funds 24.38 % Growth-and-income funds 16.41 % Balanced funds 9.20 % Other assets l (0.08 ) % Total 100.00 % | |
| Global Growth Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Global Growth Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $ 0.66%* *Annualized | |
| Expenses Paid, Amount | $ 35 | |
| Expense Ratio, Percent | 0.66% | [1] |
| Net Assets | $ 8,234,000,000 | |
| Holdings Count | Holding | 169 | |
| Investment Company, Portfolio Turnover | 28% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number holdings 169 Portfolio turnover 28% | |
| Holdings [Text Block] | Portfolio holdings by sector | |
| Global Growth Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Global Growth Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $ 0.91%* *Annualized | |
| Expenses Paid, Amount | $ 48 | |
| Expense Ratio, Percent | 0.91% | [1] |
| Net Assets | $ 8,234,000,000 | |
| Holdings Count | Holding | 169 | |
| Investment Company, Portfolio Turnover | 28% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 169 Portfolio turnover rate 28% | |
| Holdings [Text Block] | Portfolio holdings by sector ss | |
| Global Small Capitalization Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Global Small Capitalization Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $ 0.68%* *Annualized | |
| Expenses Paid, Amount | $ 34 | |
| Expense Ratio, Percent | 0.68% | [1] |
| Net Assets | $ 3,056,000,000 | |
| Holdings Count | Holding | 277 | |
| Investment Company, Portfolio Turnover | 20% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 277 Portfolio turnover 20% | |
| Holdings [Text Block] | Portfolio holdings by sector ss | |
| Global Small Capitalization Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Global Small Capitalization Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $ 0.93%* *Annualized | |
| Expenses Paid, Amount | $ 46 | |
| Expense Ratio, Percent | 0.93% | [1] |
| Net Assets | $ 3,056,000,000 | |
| Holdings Count | Holding | 277 | |
| Investment Company, Portfolio Turnover | 20% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio 277 Portfolio turnover rate 20% | |
| Holdings [Text Block] | Portfolio holdings by sector ssets | |
| Global Small Capitalization Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Global Small Capitalization Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $46 0.93%* | |
| Expenses Paid, Amount | $ 46 | |
| Expense Ratio, Percent | 0.93% | [1] |
| Net Assets | $ 3,056,000,000 | |
| Holdings Count | Holding | 277 | |
| Investment Company, Portfolio Turnover | 20% | |
| Additional Fund Statistics [Text Block] | Fund net assets (in millions) $3,056 Total number of portfolio holdings 277 Portfolio turnover rate 20% | |
| Holdings [Text Block] | Portfolio holdings by sector assets | |
| Global Small Capitalization Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Global Small Capitalization Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $59 1.18%* | |
| Expenses Paid, Amount | $ 59 | |
| Expense Ratio, Percent | 1.18% | [1] |
| Net Assets | $ 3,056,000,000 | |
| Holdings Count | Holding | 277 | |
| Investment Company, Portfolio Turnover | 20% | |
| Additional Fund Statistics [Text Block] | Fund net assets (in millions) $3,056 Total number of portfolio holdings 277 Portfolio turnover rate 20% | |
| Holdings [Text Block] | Portfolio holdings by sector assets | |
| Growth Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Growth Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six mo nt Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $18 0.34%* *Annualized | |
| Expenses Paid, Amount | $ 18 | |
| Expense Ratio, Percent | 0.34% | [1] |
| Net Assets | $ 43,835,000,000 | |
| Holdings Count | Holding | 224 | |
| Investment Company, Portfolio Turnover | 13% | |
| Additional Fund Statistics [Text Block] | Key fu n at Fund net assets (in millions) $43,835 Total number of portfolio 224 Portfolio turnover rate 13% | |
| Holdings [Text Block] | Portfolio holdings by sector assets | |
| Growth Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Growth Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for th e l oth Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $32 0.59%* *Annualized | |
| Expenses Paid, Amount | $ 32 | |
| Expense Ratio, Percent | 0.59% | [1] |
| Net Assets | $ 43,835,000,000 | |
| Holdings Count | Holding | 224 | |
| Investment Company, Portfolio Turnover | 13% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $43,835 Total number of portfolio holdings 224 Portfolio turnover rate 13% | |
| Holdings [Text Block] | Portfolio holdings by sector assets | |
| Growth Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Growth Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six m o Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $32 0.59%* *Annualized | |
| Expenses Paid, Amount | $ 32 | |
| Expense Ratio, Percent | 0.59% | [1] |
| Net Assets | $ 43,835,000,000 | |
| Holdings Count | Holding | 224 | |
| Investment Company, Portfolio Turnover | 13% | |
| Additional Fund Statistics [Text Block] | Key fund st a Fund net assets (in millions) $43,835 Total number of portfolio holdings 224 Portfolio turnover rate 13% | |
| Holdings [Text Block] | Portfolio holdings b y assets | |
| Growth Fund (Class 3) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Growth Fund | |
| Class Name | Class 3 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-3 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-3 | |
| Expenses [Text Block] | What were the fund costs f Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 3 $28 0.52%* *Annualized | |
| Expenses Paid, Amount | $ 28 | |
| Expense Ratio, Percent | 0.52% | [1] |
| Net Assets | $ 43,835,000,000 | |
| Holdings Count | Holding | 224 | |
| Investment Company, Portfolio Turnover | 13% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net a $43,835 Total number of portfolio holdings 224 Portfolio turnover rate 13% | |
| Holdings [Text Block] | Portfolio holdings by sector assets | |
| Growth Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Growth Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for th e l Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $45 0.84%* *Annualized | |
| Expenses Paid, Amount | $ 45 | |
| Expense Ratio, Percent | 0.84% | [1] |
| Net Assets | $ 43,835,000,000 | |
| Holdings Count | Holding | 224 | |
| Investment Company, Portfolio Turnover | 13% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $43,835 Total number of portfolio holdings 224 Portfolio turnover rate 13% | |
| Holdings [Text Block] | Portfolio holdings by sector assets | |
| International Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | International Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? as Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $27 0.52%* | |
| Expenses Paid, Amount | $ 27 | |
| Expense Ratio, Percent | 0.52% | [1] |
| Net Assets | $ 7,254,000,000 | |
| Holdings Count | Holding | 148 | |
| Investment Company, Portfolio Turnover | 17% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $7,254 Total number of portfolio 148 Portfolio turnover rate 17% | |
| Holdings [Text Block] | Portfolio holdings by sector assets | |
| International Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | International Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six m Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $40 0.77%* | |
| Expenses Paid, Amount | $ 40 | |
| Expense Ratio, Percent | 0.77% | [1] |
| Net Assets | $ 7,254,000,000 | |
| Holdings Count | Holding | 148 | |
| Investment Company, Portfolio Turnover | 17% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $7,254 Total number of portfolio holdings 148 Portfolio turnover rate 17% | |
| Holdings [Text Block] | Portfolio holdings by sector assets | |
| International Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | International Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $ 0.77%* | |
| Expenses Paid, Amount | $ 40 | |
| Expense Ratio, Percent | 0.77% | [1] |
| Net Assets | $ 7,254,000,000 | |
| Holdings Count | Holding | 148 | |
| Investment Company, Portfolio Turnover | 17% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $7,254 Total number of portfolio holdings 148 Portfolio turnover rate 17% | |
| Holdings [Text Block] | Portfolio holdings by sector assets | |
| International Fund (Class 3) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | International Fund | |
| Class Name | Class 3 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-3 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-3 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 3 $36 0.70%* *Annualized | |
| Expenses Paid, Amount | $ 36 | |
| Expense Ratio, Percent | 0.70% | [1] |
| Net Assets | $ 7,254,000,000 | |
| Holdings Count | Holding | 148 | |
| Investment Company, Portfolio Turnover | 17% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $7,254 Total number of portfolio holdings 148 Portfolio turnover rate 17% | |
| Holdings [Text Block] | Portfolio holdings by sector assets | |
| International Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | International Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $53 1.02%* | |
| Expenses Paid, Amount | $ 53 | |
| Expense Ratio, Percent | 1.02% | [1] |
| Net Assets | $ 7,254,000,000 | |
| Holdings Count | Holding | 148 | |
| Investment Company, Portfolio Turnover | 17% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $7,254 Total number of portfolio holdings 148 Portfolio turnover rate 17% | |
| Holdings [Text Block] | Portfolio holdings by sector assets | |
| New World Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | New World Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $29 0.57%* | |
| Expenses Paid, Amount | $ 29 | |
| Expense Ratio, Percent | 0.57% | [1] |
| Net Assets | $ 3,567,000,000 | |
| Holdings Count | Holding | 619 | |
| Investment Company, Portfolio Turnover | 34% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $3,567 Total number of portfolio holdings 619 Portfolio turnover rate 34% | |
| Holdings [Text Block] | Portfolio holdings by sector assets | |
| New World Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | New World Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $42 0.82%* | |
| Expenses Paid, Amount | $ 42 | |
| Expense Ratio, Percent | 0.82% | [1] |
| Net Assets | $ 3,567,000,000 | |
| Holdings Count | Holding | 619 | |
| Investment Company, Portfolio Turnover | 34% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $3,567 Total number of portfolio holdings 619 Portfolio turnover rate 34% | |
| Holdings [Text Block] | Portfolio holdings by sector assets | |
| New World Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | New World Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $42 0.82%* | |
| Expenses Paid, Amount | $ 42 | |
| Expense Ratio, Percent | 0.82% | [1] |
| Net Assets | $ 3,567,000,000 | |
| Holdings Count | Holding | 619 | |
| Investment Company, Portfolio Turnover | 34% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $3,567 Total number of portfolio holdings 619 Portfolio turnover rate 34% | |
| Holdings [Text Block] | Portfolio | |
| New World Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | New World Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $55 1.07%* | |
| Expenses Paid, Amount | $ 55 | |
| Expense Ratio, Percent | 1.07% | [1] |
| Net Assets | $ 3,567,000,000 | |
| Holdings Count | Holding | 619 | |
| Investment Company, Portfolio Turnover | 34% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $3,567 Total number of portfolio holdings 619 Portfolio turnover rate 34% | |
| Holdings [Text Block] | Portfolio holdings by sector assets | |
| Washington Mutual Investors Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Washington Mutual Investors Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $ 0.25%* | |
| Expenses Paid, Amount | $ 13 | |
| Expense Ratio, Percent | 0.25% | [1] |
| Net Assets | $ 10,867,000,000 | |
| Holdings Count | Holding | 181 | |
| Investment Company, Portfolio Turnover | 19% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 181 Portfolio turnover rate 19% | |
| Holdings [Text Block] | Portfolio holdings by sector assets | |
| Washington Mutual Investors Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Washington Mutual Investors Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $26 0.50%* | |
| Expenses Paid, Amount | $ 26 | |
| Expense Ratio, Percent | 0.50% | [1] |
| Net Assets | $ 10,867,000,000 | |
| Holdings Count | Holding | 181 | |
| Investment Company, Portfolio Turnover | 19% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $10,867 Total number of portfolio holdings 181 Portfolio turnover rate 19% | |
| Holdings [Text Block] | Portfolio | |
| Washington Mutual Investors Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Washington Mutual Investors Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $26 0.50%* | |
| Expenses Paid, Amount | $ 26 | |
| Expense Ratio, Percent | 0.50% | [1] |
| Net Assets | $ 10,867,000,000 | |
| Holdings Count | Holding | 181 | |
| Investment Company, Portfolio Turnover | 19% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $10,867 Total number of portfolio holdings 181 Portfolio turnover rate 19% | |
| Holdings [Text Block] | Portfolio | |
| Washington Mutual Investors Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Washington Mutual Investors Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $39 0.75%* | |
| Expenses Paid, Amount | $ 39 | |
| Expense Ratio, Percent | 0.75% | [1] |
| Net Assets | $ 10,867,000,000 | |
| Holdings Count | Holding | 181 | |
| Investment Company, Portfolio Turnover | 19% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $10,867 Total number of portfolio holdings 181 Portfolio turnover rate 19% | |
| Holdings [Text Block] | Portfolio holdings by sector assets | |
| U.S. Government Securities Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | U.S. Government Securities Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $26 0.52%* *Annualized | |
| Expenses Paid, Amount | $ 26 | |
| Expense Ratio, Percent | 0.52% | [1] |
| Net Assets | $ 1,722,000,000 | |
| Holdings Count | Holding | 602 | |
| Investment Company, Portfolio Turnover | 204% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $1,722 Total number of portfolio holdings 602 Portfolio turnover rate including 204% Portfolio turnover rate excluding mortgage dollar roll transactions 17% | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| U.S. Government Securities Fund (Class 3) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | U.S. Government Securities Fund | |
| Class Name | Class 3 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-3 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-3 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 3 $22 0.45%* *Annualized | |
| Expenses Paid, Amount | $ 22 | |
| Expense Ratio, Percent | 0.45% | [1] |
| Net Assets | $ 1,722,000,000 | |
| Holdings Count | Holding | 602 | |
| Investment Company, Portfolio Turnover | 204% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $1,722 Total number of portfolio holdings 602 Portfolio turnover rate including 204% Portfolio turnover rate excluding mortgage dollar roll transactions 17% | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| U.S. Government Securities Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | U.S. Government Securities Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $38 0.77%* *Annualized | |
| Expenses Paid, Amount | $ 38 | |
| Expense Ratio, Percent | 0.77% | [1] |
| Net Assets | $ 1,722,000,000 | |
| Holdings Count | Holding | 602 | |
| Investment Company, Portfolio Turnover | 204% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $1,722 Total number of portfolio holdings 602 Portfolio turnover rate including 204% Portfolio turnover rate excluding mortgage dollar roll transactions 17% | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| Managed Risk Growth Fund (Class P1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Managed Risk Growth Fund | |
| Class Name | Class P1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-P1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-P1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class P1 $20 0.37%* *Annualized | |
| Expenses Paid, Amount | $ 20 | |
| Expense Ratio, Percent | 0.37% | [1] |
| Net Assets | $ 519,745,000 | |
| Holdings Count | Holding | 13 | |
| Investment Company, Portfolio Turnover | 6% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $519,745 Total number of portfolio holdings 13 Portfolio turnover rate 6 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Includes derivatives. | |
| Managed Risk Growth Fund (Class P2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Managed Risk Growth Fund | |
| Class Name | Class P2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-P2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-P2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class P2 $ 0.62 % * *Annualized | |
| Expenses Paid, Amount | $ 33 | |
| Expense Ratio, Percent | 0.62% | [1] |
| Net Assets | $ 519,745,000 | |
| Holdings Count | Holding | 13 | |
| Investment Company, Portfolio Turnover | 6% | |
| Additional Fund Statistics [Text Block] | Fund net assets (in thousands) $ Total number of portfolio holdings 13 Portfolio turnover rate 6 % | |
| Holdings [Text Block] | Portfolio holdings b y *Includes derivatives. | |
| Managed Risk International Fund (Class P1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Managed Risk International Fund | |
| Class Name | Class P1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-P1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-P1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class P1 $ 0.38 % * *Annualized | |
| Expenses Paid, Amount | $ 19 | |
| Expense Ratio, Percent | 0.38% | [1] |
| Net Assets | $ 123,091,000 | |
| Holdings Count | Holding | 14 | |
| Investment Company, Portfolio Turnover | 3% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $ Total number of portfolio holdings 14 Portfolio turnover rate 3 % | |
| Holdings [Text Block] | Portfolio holdings by fu *Includes derivatives. | |
| Managed Risk International Fund (Class P2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Managed Risk International Fund | |
| Class Name | Class P2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-P2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-P2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class P2 $33 0.64%* *Annualized | |
| Expenses Paid, Amount | $ 33 | |
| Expense Ratio, Percent | 0.64% | [1] |
| Net Assets | $ 123,091,000 | |
| Holdings Count | Holding | 14 | |
| Investment Company, Portfolio Turnover | 3% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $123,091 Total number of portfolio holdings 14 Portfolio turnover rate 3 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Includes derivatives. | |
| Managed Risk Washington Mutual Investors Fund (Class P1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Managed Risk Washington Mutual Investors Fund | |
| Class Name | Class P1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-P1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-P1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class P1 $18 0.35 % * *Annualized | |
| Expenses Paid, Amount | $ 18 | |
| Expense Ratio, Percent | 0.35% | [1] |
| Net Assets | $ 329,184,000 | |
| Holdings Count | Holding | 13 | |
| Investment Company, Portfolio Turnover | 4% | |
| Additional Fund Statistics [Text Block] | Fund net assets (in thousands) $329,184 Total number of portfolio holdings 13 Portfolio turnover rate 4 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Includes derivatives. | |
| Managed Risk Washington Mutual Investors Fund (Class P2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Managed Risk Washington Mutual Investors Fund | |
| Class Name | Class P2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-P2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-P2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class P2 $32 0.62 % * *Annualized | |
| Expenses Paid, Amount | $ 32 | |
| Expense Ratio, Percent | 0.62% | [1] |
| Net Assets | $ 329,184,000 | |
| Holdings Count | Holding | 13 | |
| Investment Company, Portfolio Turnover | 4% | |
| Additional Fund Statistics [Text Block] | Fund net assets (in thousands) $329,184 Total number of portfolio holdings 13 Portfolio turnover rate 4 % | |
| Holdings [Text Block] | Portfolio holdings by fun *Includes derivatives. | |
| Managed Risk Growth-Income Fund (Class P1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Managed Risk Growth-Income Fund | |
| Class Name | Class P1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-P1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-P1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class P1 $19 0.36 % * *Annualized | |
| Expenses Paid, Amount | $ 19 | |
| Expense Ratio, Percent | 0.36% | [1] |
| Net Assets | $ 2,233,000,000 | |
| Holdings Count | Holding | 19 | |
| Investment Company, Portfolio Turnover | 8% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $2,233 Total number of portfolio holdings 19 Portfolio turnover rate 8 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Includes derivatives. | |
| Managed Risk Growth-Income Fund (Class P2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Managed Risk Growth-Income Fund | |
| Class Name | Class P2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-P2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-P2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class P2 $32 0.61 % * *Annualized | |
| Expenses Paid, Amount | $ 32 | |
| Expense Ratio, Percent | 0.61% | [1] |
| Net Assets | $ 2,233,000,000 | |
| Holdings Count | Holding | 19 | |
| Investment Company, Portfolio Turnover | 8% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $2,233 Total number of po 19 Portfolio turnover rate 8 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Includes derivatives. | |
| Managed Risk Asset Allocation Fund Class P1 | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Managed Risk Asset Allocation Fund | |
| Class Name | Class P1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-P1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-P1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class P1 $19 0.36%* *Annualized | |
| Expenses Paid, Amount | $ 19 | |
| Expense Ratio, Percent | 0.36% | [1] |
| Net Assets | $ 2,092,000,000 | |
| Holdings Count | Holding | 15 | |
| Investment Company, Portfolio Turnover | 6% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $2,092 Total number of portfolio holdings 15 Portfolio turnover rate 6 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Includes derivatives. | |
| Managed Risk Asset Allocation Fund Class P2 | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Managed Risk Asset Allocation Fund | |
| Class Name | Class P2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-P2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-P2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class P2 $32 0.61%* *Annualized | |
| Expenses Paid, Amount | $ 32 | |
| Expense Ratio, Percent | 0.61% | [1] |
| Net Assets | $ 2,092,000,000 | |
| Holdings Count | Holding | 15 | |
| Investment Company, Portfolio Turnover | 6% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $2,092 Total number of portfolio holdings 15 Portfolio turnover rate 6 % | |
| Holdings [Text Block] | Portfolio holdings by fund type of *Includes derivatives. | |
| Portfolio Series - American Funds Global Growth Portfolio Class 4 | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Portfolio SeriesAmerican Funds® Global Growth Portfolio | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Global Growth Portfolio for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? 0 Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $27 0.52%* *Annualized | |
| Expenses Paid, Amount | $ 27 | |
| Expense Ratio, Percent | 0.52% | [1] |
| Net Assets | $ 73,000,000 | |
| Holdings Count | Holding | 6 | |
| Investment Company, Portfolio Turnover | 5% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $73 Total number of portfolio holdings 6 Portfolio turnover rate 5 % | |
| Holdings [Text Block] | Portfolio holdings by fund type Growth funds 80.04 % Growth-and-income funds 20.04 % Other assets less liabilities (0.08 ) % Total 100.00 % | |
| Portfolio Series - American Funds Growth and Income Portfolio Class 4 | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Portfolio Series American Funds® Growth and Income Portfolio | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Growth and Income Portfolio for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? on Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $26 0.51%* *Annualized | |
| Expenses Paid, Amount | $ 26 | |
| Expense Ratio, Percent | 0.51% | [1] |
| Net Assets | $ 371,000,000 | |
| Holdings Count | Holding | 8 | |
| Investment Company, Portfolio Turnover | 4% | |
| Additional Fund Statistics [Text Block] | Fund net assets (in millions) $371 Total number of po rtfoli 8 Portfolio turnover rate 4 % | |
| Holdings [Text Block] | Portfolio holdings by fund type Growth-and-income funds 40.06% Fixed income funds 30.00 Growth funds 10.03 Equity-income funds 10.00 Asset allocation funds 5.01 Balance d fun 4.98 Other assets less liabilities (0.08) Total 100.00% | |
| Portfolio Series - American Funds Managed Risk Growth Portfolio Class P2 | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Portfolio Series American Funds® Managed Risk Growth Portfolio | |
| Class Name | Class P2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Managed Risk Growth Portfolio for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-P2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-P2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? se Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class P2 $ 0.61%* *Annualized | |
| Expenses Paid, Amount | $ 32 | |
| Expense Ratio, Percent | 0.61% | [1] |
| Net Assets | $ 1,801,481,000 | |
| Holdings Count | Holding | 20 | |
| Investment Company, Portfolio Turnover | 10% | |
| Additional Fund Statistics [Text Block] | Fund net assets (in thousands) $ Total number of portf olio 20 Portfolio turnover rate 10% | |
| Holdings [Text Block] | Portfolio holdings by fund type *Includes derivatives. | |
| Portfolio Series - American Funds Managed Risk Growth and Income Portfolio Class P2 | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Portfolio Series American Funds® Managed Risk Growth and Income Portfolio | |
| Class Name | Class P2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Managed Risk Growth and Income Portfolio for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-P2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-P2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? d Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class P2 $32 0.61%* *Annualized | |
| Expenses Paid, Amount | $ 32 | |
| Expense Ratio, Percent | 0.61% | [1] |
| Net Assets | $ 1,375,588,000 | |
| Holdings Count | Holding | 23 | |
| Investment Company, Portfolio Turnover | 8% | |
| Additional Fund Statistics [Text Block] | Fund net assets (in thousands) $ Total n u 23 Portfolio turnover rate 8 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Includes derivatives. | |
| Portfolio Series - American Funds Managed Risk Global Allocation Portfolio Class P2 | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Portfolio SeriesAmerican Funds® Managed Risk Global Allocation Portfolio | |
| Class Name | Class P2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Managed Risk Global Allocation Portfolio for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-P2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-P2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? het al Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class P2 $31 0.61%* *Annualized | |
| Expenses Paid, Amount | $ 31 | |
| Expense Ratio, Percent | 0.61% | [1] |
| Net Assets | $ 382,567,000 | |
| Holdings Count | Holding | 17 | |
| Investment Company, Portfolio Turnover | 7% | |
| Additional Fund Statistics [Text Block] | Fund net assets (in thousands) $ Total number of portfolio holdings 17 Portfolio turnover rate 7 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Includes derivatives. | |
| American Funds IS 2070 Target Date Fund Class 1 | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2070 Target Date Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2070 Target Date Fund for the period from May 1, 2024, commencement of operations, to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $ 1,2 0.00 % 3,4 1 2 June Expenses e fu 3 0 4 | |
| Expenses Paid, Amount | $ 0 | [2],[3] |
| Expense Ratio, Percent | 0% | [1],[4] |
| Net Assets | $ 42,000 | |
| Holdings Count | Holding | 16 | |
| Investment Company, Portfolio Turnover | 2% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $ Total number of portfolio 16 Portfolio turnover rate 2 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Less than 0.01%. | |
| American Funds IS 2030 Target Date Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2030 Target Date Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2030 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last 0,000 in Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $3 0.06%* *Annualized | |
| Expenses Paid, Amount | $ 3 | |
| Expense Ratio, Percent | 0.06% | [1] |
| Net Assets | $ 494,000 | |
| Holdings Count | Holding | 23 | |
| Investment Company, Portfolio Turnover | 6% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $494 Total number of portfolio holdings 23 Portfolio turnover rate 6 % | |
| Holdings [Text Block] | Portfolio holdings by fund type ass Fixed income funds 32.39% Growth-and-income funds 27.93% Growth funds 18.42% Balanced funds 13.36% Equity-income funds 8.10% Other assets less liabilities (0.20) Total 100.00% | |
| American Funds IS 2030 Target Date Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2030 Target Date Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2030 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $3 0.06%* *Annualized | |
| Expenses Paid, Amount | $ 3 | |
| Expense Ratio, Percent | 0.06% | [1] |
| Net Assets | $ 494,000 | |
| Holdings Count | Holding | 23 | |
| Investment Company, Portfolio Turnover | 6% | |
| Additional Fund Statistics [Text Block] | Key fund sta ti Fund net assets (in thousands) $494 Total number of portfolio holdings 23 Portfolio turnover rate 6 % | |
| Holdings [Text Block] | Portfolio holdings by fund type Fixed income funds 32.39% Growth-and-income funds 27.93% Growth funds 18.42% Balanced funds 13.36% Equity-income funds 8.10% Other assets less liabilities (0.20) Total 100.00% | |
| American Funds IS 2030 Target Date Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2030 Target Date Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2030 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? ed o ,00 Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $28 0.54%* *Annualized | |
| Expenses Paid, Amount | $ 28 | |
| Expense Ratio, Percent | 0.54% | [1] |
| Net Assets | $ 494,000 | |
| Holdings Count | Holding | 23 | |
| Investment Company, Portfolio Turnover | 6% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $494 Total number of portfolio holdings 23 Portfolio turnover rate 6 % | |
| Holdings [Text Block] | Portfolio holdings by fund type Fixed income funds 32.39% Growth-and-income funds 27.93 Growth funds 18.42 Balanced funds 13.36 Equity-income funds 8.10 Other assets less liabilities (0.20) Total 100.00% | |
| American Funds IS 2025 Target Date Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2025 Target Date Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2025 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $3 0.06%* *Annualized | |
| Expenses Paid, Amount | $ 3 | |
| Expense Ratio, Percent | 0.06% | [1] |
| Net Assets | $ 2,000,000 | |
| Holdings Count | Holding | 24 | |
| Investment Company, Portfolio Turnover | 13% | |
| Additional Fund Statistics [Text Block] | Fund net assets (in millions) $2 Total number of portfolio holdings 24 Portfolio turnover rate 13% | |
| Holdings [Text Block] | Portfolio holdings by fund type of Fixed income funds 43.86% Growth-and-income funds 24.34% Equity-income funds 12.49% Balanced funds 12.17% Growth funds 7.19% Other assets less liabilities (0.05) Total 100.00% | |
| American Funds IS 2025 Target Date Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2025 Target Date Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2025 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? st Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $3 0.06%* *Annualized | |
| Expenses Paid, Amount | $ 3 | |
| Expense Ratio, Percent | 0.06% | [1] |
| Net Assets | $ 2,000,000 | |
| Holdings Count | Holding | 24 | |
| Investment Company, Portfolio Turnover | 13% | |
| Additional Fund Statistics [Text Block] | Fund net assets (in millions) $2 Total number of portfolio holdings 24 Portfolio turnover rate 13% | |
| Holdings [Text Block] | Portfolio holdings by fund type Fixed income funds 43.86% Growth-and-income funds 24.34% Equity-income funds 12.49% Balanced funds 12.17% Growth funds 7.19% Other assets less liabilities (0.05) Total 100.00% | |
| American Funds IS 2025 Target Date Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2025 Target Date Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2025 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $3 0.06%* *Annualized | |
| Expenses Paid, Amount | $ 3 | |
| Expense Ratio, Percent | 0.06% | [1] |
| Net Assets | $ 2,000,000 | |
| Holdings Count | Holding | 24 | |
| Investment Company, Portfolio Turnover | 13% | |
| Additional Fund Statistics [Text Block] | Fund net assets (in millions) $2 Total number of portfolio holdings 24 Portfolio turnover rate 13% | |
| Holdings [Text Block] | Portfolio holdings by fund type Fixed income funds 43.86% Growth-and-income funds 24.34% Equity-income funds 12.49% Balanced funds 12.17% Growth funds 7.19% Other assets less liabilities (0.05) Total 100.00% | |
| American Funds IS 2025 Target Date Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2025 Target Date Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2025 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $28 0.56%* *Annualized | |
| Expenses Paid, Amount | $ 28 | |
| Expense Ratio, Percent | 0.56% | [1] |
| Net Assets | $ 2,000,000 | |
| Holdings Count | Holding | 24 | |
| Investment Company, Portfolio Turnover | 13% | |
| Additional Fund Statistics [Text Block] | Fund net assets (in millions) $2 Total number of portfolio holdings 24 Portfolio turnover rate 13% | |
| Holdings [Text Block] | Portfolio holdings b y f Fixed income funds 43.86% Growth-and-income funds 24.34% Equity-income funds 12.49% Balanced funds 12.17% Growth funds 7.19% Other assets less liabilities (0.05) Total 100.00% | |
| American Funds IS 2020 Target Date Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2020 Target Date Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2020 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? nvestm Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $ 0.06 % * *Annualized | |
| Expenses Paid, Amount | $ 3 | |
| Expense Ratio, Percent | 0.06% | [1] |
| Net Assets | $ 5,000,000 | |
| Holdings Count | Holding | 21 | |
| Investment Company, Portfolio Turnover | 2% | |
| Additional Fund Statistics [Text Block] | Fund net assets (in millions) $ Total number of portfolio holdings 21 Portfolio turnover rate 2 % | |
| Holdings [Text Block] | Portfolio holdin gs Fixed income funds 45.06 % Growth-and-income funds 22.20 % Equity-income funds 17.53 % Balanced funds 11.98 % Growth funds 3.29 % Other assets less liabilities (0.06 ) % Total 100.00 % | |
| American Funds IS 2020 Target Date Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2020 Target Date Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2020 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $ 0.06 % * *Annualized | |
| Expenses Paid, Amount | $ 3 | |
| Expense Ratio, Percent | 0.06% | [1] |
| Net Assets | $ 5,000,000 | |
| Holdings Count | Holding | 21 | |
| Investment Company, Portfolio Turnover | 2% | |
| Additional Fund Statistics [Text Block] | Fund net assets (in millions) $ Total number of portfolio holdings 21 Portfolio turnover rate 2 % | |
| Holdings [Text Block] | Portfolio holdings by fund type nt o Fixed income funds 45.06 % Growth-and-income funds 22.20 % Equity-income funds 17.53 % Balanced funds 11.98 % Growth funds 3.29 % Other assets less liabilities (0.06 ) % Total 100.00 % | |
| American Funds IS 2020 Target Date Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2020 Target Date Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2020 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? 0 Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $ 0.06 % * *Annualized | |
| Expenses Paid, Amount | $ 3 | |
| Expense Ratio, Percent | 0.06% | [1] |
| Net Assets | $ 5,000,000 | |
| Holdings Count | Holding | 21 | |
| Investment Company, Portfolio Turnover | 2% | |
| Additional Fund Statistics [Text Block] | Fund net assets (in millions) $ Total number of portfolio holdings 21 Portfolio turnover rate 2 % | |
| Holdings [Text Block] | Portfolio holdings by f u Fixed income funds 45.06 % Growth-and-income funds 22.20 % Equity-income funds 17.53 % Balanced funds 11.98 % Growth funds 3.29 % Other assets less liabilities (0.06 ) % Total 100.00 % | |
| American Funds IS 2020 Target Date Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2020 Target Date Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2020 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? 00 Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $ 0.56 % * *Annualized | |
| Expenses Paid, Amount | $ 28 | |
| Expense Ratio, Percent | 0.56% | [1] |
| Net Assets | $ 5,000,000 | |
| Holdings Count | Holding | 21 | |
| Investment Company, Portfolio Turnover | 2% | |
| Additional Fund Statistics [Text Block] | Fund net assets (in millions) $ Total number of portfolio holdings 21 Portfolio turnover rate 2 % | |
| Holdings [Text Block] | Portfolio holdings by fund type nt Fixed income funds 45.06 % Growth-and-income funds 22.20 % Equity-income funds 17.53 % Balanced funds 11.98 % Growth funds 3.29 % Other assets less liabilities (0.06 ) % Total 100.00 % | |
| American Funds IS 2015 Target Date Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2015 Target Date Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2015 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $ 0.06 % * *Annualized | |
| Expenses Paid, Amount | $ 3 | |
| Expense Ratio, Percent | 0.06% | [1] |
| Net Assets | $ 48,000,000 | |
| Holdings Count | Holding | 21 | |
| Investment Company, Portfolio Turnover | 4% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 21 Portfolio turnover rate 4 % | |
| Holdings [Text Block] | Portfolio holdings by f Fixed income funds 49.54 % Growth-and-income funds 20.21 % Equity-income funds 18.91 % Balanced funds 11.11 % Growth funds 0.30 % Other assets less liabilities (0.07 ) % Total 100.00 % | |
| American Funds IS 2015 Target Date Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2015 Target Date Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2015 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $ 0.06 % * *Annualized | |
| Expenses Paid, Amount | $ 3 | |
| Expense Ratio, Percent | 0.06% | [1] |
| Net Assets | $ 48,000,000 | |
| Holdings Count | Holding | 21 | |
| Investment Company, Portfolio Turnover | 4% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 21 Portfolio turnover rate 4 % | |
| Holdings [Text Block] | Portfolio holdi ngs Fixed income fu 49.54 % Growth-and-income funds 20.21 % Equity-income funds 18.91 % Balanced funds 11.11 % Growth funds 0.30 % Other assets less liabilities (0.07 ) % Total 100.00 % | |
| Capital World Growth and Income Fund (class I) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Capital World Growth and Income Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? ypoth 10,000 stm Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $21 0.41%* *Annualized | |
| Expenses Paid, Amount | $ 21 | |
| Expense Ratio, Percent | 0.41% | [1] |
| Net Assets | $ 1,909,000,000 | |
| Holdings Count | Holding | 329 | |
| Investment Company, Portfolio Turnover | 16% | |
| Additional Fund Statistics [Text Block] | Key fund s tatisti Fund net assets (in millions) $1,909 Total number of portfolio holdings 329 Portfolio turnover rate 16% | |
| Holdings [Text Block] | Portfolio | |
| Capital World Growth and Income Fund (class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Capital World Growth and Income Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? hypothetical 10,000 investm Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $34 0.66%* *Annualized | |
| Expenses Paid, Amount | $ 34 | |
| Expense Ratio, Percent | 0.66% | [1] |
| Net Assets | $ 1,909,000,000 | |
| Holdings Count | Holding | 329 | |
| Investment Company, Portfolio Turnover | 16% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $1,909 Total number of portfolio holdings 329 Portfolio turnover rate 16% | |
| Holdings [Text Block] | Portfolio rce | |
| Capital World Growth and Income Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Capital World Growth and Income Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six mo ypoth 10,000 Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $34 0.66%* *Annualized | |
| Expenses Paid, Amount | $ 34 | |
| Expense Ratio, Percent | 0.66% | [1] |
| Net Assets | $ 1,909,000,000 | |
| Holdings Count | Holding | 329 | |
| Investment Company, Portfolio Turnover | 16% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $1,909 Total number of portfolio holdings 329 Portfolio turnover rate 16% | |
| Holdings [Text Block] | Por tfo erce asse | |
| Capital World Growth and Income Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Capital World Growth and Income Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? as poth 10,000 stm Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $47 0.91%* *Annualized | |
| Expenses Paid, Amount | $ 47 | |
| Expense Ratio, Percent | 0.91% | [1] |
| Net Assets | $ 1,909,000,000 | |
| Holdings Count | Holding | 329 | |
| Investment Company, Portfolio Turnover | 16% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $1,909 Total number of portfolio holdings 329 Portfolio turnover rate 16% | |
| Holdings [Text Block] | Portfolio | |
| Growth-Income Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Growth-Income Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? 1 0,000 e Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $15 0.28%* *Annualized | |
| Expenses Paid, Amount | $ 15 | |
| Expense Ratio, Percent | 0.28% | [1] |
| Net Assets | $ 40,108,000,000 | |
| Holdings Count | Holding | 161 | |
| Investment Company, Portfolio Turnover | 36% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $40,108 Total number of portfolio holdings 161 Portfolio turnover rate 36% | |
| Holdings [Text Block] | Portfolio | |
| American Funds IS 2070 Target Date Fund Class 1A | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2070 Target Date Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2070 Target Date Fund for the period from May 1, 2024, commencement of operations, to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? hypothetical 10 investment Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $ 1,2 0.00 % 3,4 1 2 Expenses months higher 3 0 4 | |
| Expenses Paid, Amount | $ 0 | [2],[3] |
| Expense Ratio, Percent | 0% | [1],[4] |
| Net Assets | $ 42,000 | |
| Holdings Count | Holding | 16 | |
| Investment Company, Portfolio Turnover | 2% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $ Total number of portfolio holdings 16 Portfolio turnover rate 2 % | |
| Holdings [Text Block] | Portfo li by *Less than 0.01%. | |
| American Funds IS 2070 Target Date Fund Class 2 | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2070 Target Date Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2070 Target Date Fund for the period from May 1, 2024, commencement of operations, to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $ 0 1,2 0.00 % 3,4 1 2 from 3 0 4 | |
| Expenses Paid, Amount | $ 0 | [2],[3] |
| Expense Ratio, Percent | 0% | [1],[4] |
| Net Assets | $ 42,000 | |
| Holdings Count | Holding | 16 | |
| Investment Company, Portfolio Turnover | 2% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $42 Total number of portfolio holdings 16 Portfolio turnover rate 2 % | |
| Holdings [Text Block] | Portfolio *Less than 0.01%. | |
| American Funds® IS 2070 Target Date Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2070 Target Date Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2070 Target Date Fund for the period from May 1, 2024, commencement of operations, to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? hypothetical 10,000 Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $ 1,2 0.00 % 3,4 1 2 3 0 4 | |
| Expenses Paid, Amount | $ 0 | [2],[3] |
| Expense Ratio, Percent | 0% | [1],[4] |
| Net Assets | $ 42,000 | |
| Holdings Count | Holding | 16 | |
| Investment Company, Portfolio Turnover | 2% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $42 Total number of portfolio holdings 16 Portfolio turnover rate 2 % | |
| Holdings [Text Block] | Portfolio p erce *Less than 0.01%. | |
| American Funds® IS 2065 Target Date Fund CLASS 1 | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2065 Target Date Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2065 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $4 0.08%* *Annualized | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.08% | [1] |
| Net Assets | $ 50,000 | |
| Holdings Count | Holding | 16 | |
| Investment Company, Portfolio Turnover | 7% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $50 Total number of portfolio holdings 16 Portfolio turnover rate 7 % | |
| Holdings [Text Block] | Portfolio *Less than 0.01%. | |
| Target Date Fund Class 1A | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2065 Target Date Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2065 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? 10,000 Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $4 0.08 % * *Annualized | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.08% | [1] |
| Net Assets | $ 50,000 | |
| Holdings Count | Holding | 16 | |
| Investment Company, Portfolio Turnover | 7% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $50 Total number of portfolio holdings 16 Portfolio turnover rate 7 % | |
| Holdings [Text Block] | Portfolio holdings by fund type (pe *Less than 0.01%. | |
| American Funds IS 2065 Target Date Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2065 Target Date Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2065 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? 10,000 Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $4 0.08 % * *Annualized | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.08% | [1] |
| Net Assets | $ 50,000 | |
| Holdings Count | Holding | 16 | |
| Investment Company, Portfolio Turnover | 7% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $50 Total number of portfolio holdings 16 Portfolio turnover rate 7 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Less than 0.01%. | |
| American Funds IS 2065 Target Date Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2065 Target Date Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2065 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? 10,000 Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $4 0.08 % * *Annualized | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.08% | [1] |
| Net Assets | $ 50,000 | |
| Holdings Count | Holding | 16 | |
| Investment Company, Portfolio Turnover | 7% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $50 Total number of portfolio holdings 16 Portfolio turnover rate 7% | |
| Holdings [Text Block] | Portfolio holdings by fund type *Less than 0.01%. | |
| American Funds® IS 2060 Target Date Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2060 Target Date Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2060 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $4 0.08%* *Annualized | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.08% | [1] |
| Net Assets | $ 50,000 | |
| Holdings Count | Holding | 16 | |
| Investment Company, Portfolio Turnover | 7% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $50 Total number of portfolio holdings 16 Portfolio turnover rate 7 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Less than 0.01%. | |
| American Funds IS 2060 Target Date Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2060 Target Date Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2060 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $4 0.08%* *Annualized | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.08% | [1] |
| Net Assets | $ 50,000 | |
| Holdings Count | Holding | 16 | |
| Investment Company, Portfolio Turnover | 7% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $50 Total number of portfolio holdings 16 Portfolio turnover rate 7 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Less than 0.01%. | |
| American Funds IS 2060 Target Date Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2060 Target Date Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2060 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $4 0.08%* *Annualized | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.08% | [1] |
| Net Assets | $ 50,000 | |
| Holdings Count | Holding | 16 | |
| Investment Company, Portfolio Turnover | 7% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $50 Total number of portfolio holdings 16 Portfolio turnover rate 7 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Less than 0.01%. | |
| American Funds IS 2060 Target Date Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2060 Target Date Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2060 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $4 0.08%* *Annualized | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.08% | [1] |
| Net Assets | $ 50,000 | |
| Holdings Count | Holding | 16 | |
| Investment Company, Portfolio Turnover | 7% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $50 Total number of portfolio holdings 16 Portfolio turnover rate 7 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Less than 0.01%. | |
| American Funds® IS 2055 Target Date Fund Class 1 | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2055 Target Date Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2055 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $4 0.08%* *Annualized | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.08% | [1] |
| Net Assets | $ 50,000 | |
| Holdings Count | Holding | 17 | |
| Investment Company, Portfolio Turnover | 8% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $50 Total number of portfolio holdings 17 Portfolio turnover rate 8 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Less than 0.01%. | |
| American Funds® IS 2055 Target Date Fund Class 1A | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2055 Target Date Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2055 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $4 0.08%* *Annualized | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.08% | [1] |
| Net Assets | $ 50,000 | |
| Holdings Count | Holding | 17 | |
| Investment Company, Portfolio Turnover | 8% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $50 Total number of portfolio holdings 17 Portfolio turnover rate 8 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Less than 0.01%. | |
| American Funds IS 2055 Target Date Fund Class 2 | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2055 Target Date Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2055 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $4 0.08%* *Annualized | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.08% | [1] |
| Net Assets | $ 50,000 | |
| Holdings Count | Holding | 17 | |
| Investment Company, Portfolio Turnover | 8% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $50 Total number of portfolio holdings 17 Portfolio turnover rate 8 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Less than 0.01%. | |
| American Funds® IS 2055 Target Date Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2055 Target Date Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2055 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? 10,000 vestme Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $4 0.08%* *Annualized | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.08% | [1] |
| Net Assets | $ 50,000 | |
| Holdings Count | Holding | 17 | |
| Investment Company, Portfolio Turnover | 8% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $50 Total number of portfolio holdings 17 Portfolio turnover rate 8 % | |
| Holdings [Text Block] | Portfolio holdings by fund type percent of set *Less than 0.01%. | |
| American Funds® IS 2050 Target Date Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2050 Target Date Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2050 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? 10,000 Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $4 0.08%* *Annualized | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.08% | [1] |
| Net Assets | $ 49,000 | |
| Holdings Count | Holding | 19 | |
| Investment Company, Portfolio Turnover | 8% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $49 Total number of portfolio holdings 19 Portfolio turnover rate 8 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Less than 0.01%. | |
| American Funds® IS 2050 Target Date Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2050 Target Date Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2050 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? 10,000 estm Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $4 0.08%* *Annualized | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.08% | [1] |
| Net Assets | $ 49,000 | |
| Holdings Count | Holding | 19 | |
| Investment Company, Portfolio Turnover | 8% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $49 Total number of portfolio holdings 19 Portfolio turnover rate 8 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Less than 0.01%. | |
| American Funds IS 2050 Target Date Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2050 Target Date Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2050 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $4 0.08 *Annualized | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.08% | [1] |
| Net Assets | $ 49,000 | |
| Holdings Count | Holding | 19 | |
| Investment Company, Portfolio Turnover | 8% | |
| Additional Fund Statistics [Text Block] | Key fu nd Fund net assets (in thousands) $49 Total number of portfolio holdings 19 Portfolio turnover rate 8 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Less than 0.01%. | |
| American Funds IS 2050 Target Date Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2050 Target Date Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2050 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $4 0.08 *Annualized | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.08% | [1] |
| Net Assets | $ 49,000 | |
| Holdings Count | Holding | 19 | |
| Investment Company, Portfolio Turnover | 8% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $49 Total number of portfolio holdings 19 Portfolio turnover rate 8 % | |
| Holdings [Text Block] | Portfolio holdings by fund type cent *Less than 0.01%. | |
| American Funds IS 2045 Target Date Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2045 Target Date Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2045 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $4 0.08%* *Annualized | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.08% | [1] |
| Net Assets | $ 49,000 | |
| Holdings Count | Holding | 19 | |
| Investment Company, Portfolio Turnover | 8% | |
| Additional Fund Statistics [Text Block] | Key fund stati Fund net assets (in thousands) $49 Total number of portfolio holdings 19 Portfolio turnover rate 8 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Less than 0.01%. | |
| American Funds IS 2045 Target Date Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2045 Target Date Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2045 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $4 0.08%* *Annualized | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.08% | [1] |
| Net Assets | $ 49,000 | |
| Holdings Count | Holding | 19 | |
| Investment Company, Portfolio Turnover | 8% | |
| Additional Fund Statistics [Text Block] | Key fun d st Fund net assets (in thousands) $49 Total number of portfolio holdings 19 Portfolio turnover rate 8 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Less than 0.01%. | |
| American Funds IS 2045 Target Date Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2045 Target Date Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2045 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $4 0.08%* *Annualized | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.08% | [1] |
| Net Assets | $ 49,000 | |
| Holdings Count | Holding | 19 | |
| Investment Company, Portfolio Turnover | 8% | |
| Additional Fund Statistics [Text Block] | Key fun Fund net assets (in thousands) $49 Total number of portfolio holdings 19 Portfolio turnover rate 8 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Less than 0.01%. | |
| American Funds IS 2045 Target Date Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2045 Target Date Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2045 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? 10,000 Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $ 0.08 % * *Annualized | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.08% | [1] |
| Net Assets | $ 49,000 | |
| Holdings Count | Holding | 19 | |
| Investment Company, Portfolio Turnover | 8% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands $ Total number of portfolio holdings 19 Portfolio turnover rate 8 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Less than 0.01%. | |
| American Funds IS 2040 Target Date Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2040 Target Date Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2040 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1. | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last hypothetical Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $ 0.06 % * *Annualized | |
| Expenses Paid, Amount | $ 3 | |
| Expense Ratio, Percent | 0.06% | [1] |
| Net Assets | $ 131,000 | |
| Holdings Count | Holding | 22 | |
| Investment Company, Portfolio Turnover | 6% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $ Total number of portfolio holdings 22 Portfolio turnover rate 6 % | |
| Holdings [Text Block] | Portfolio holdings by fund percent *Less than 0.01%. | |
| American Funds IS 2040 Target Date Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2040 Target Date Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2040 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A. | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? a Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $3 0.06%* *Annualized | |
| Expenses Paid, Amount | $ 3 | |
| Expense Ratio, Percent | 0.06% | [1] |
| Net Assets | $ 131,000 | |
| Holdings Count | Holding | 22 | |
| Investment Company, Portfolio Turnover | 6% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $131 Total number of portfolio holdings 22 Portfolio turnover rate 6 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Less than 0.01%. | |
| American Funds IS 2040 Target Date Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2040 Target Date Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2040 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $3 0.06%* | |
| Expenses Paid, Amount | $ 3 | |
| Expense Ratio, Percent | 0.06% | [1] |
| Net Assets | $ 131,000 | |
| Holdings Count | Holding | 22 | |
| Investment Company, Portfolio Turnover | 6% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $131 Total number of po 22 Portfolio turnover rate 6 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Less than 0.01%. | |
| American Funds IS 2040 Target Date Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2040 Target Date Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2040 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last s ix m Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $ 0.17%* | |
| Expenses Paid, Amount | $ 9 | |
| Expense Ratio, Percent | 0.17% | [1] |
| Net Assets | $ 131,000 | |
| Holdings Count | Holding | 22 | |
| Investment Company, Portfolio Turnover | 6% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $131 Total number of portfolio holdings 22 Portfolio turnover rate 6 % | |
| Holdings [Text Block] | Portfolio holdings by fund type *Less than 0.01%. | |
| American Funds IS 2035 Target Date Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2035 Target Date Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2035 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $ 0.07%* | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.07% | [1] |
| Net Assets | $ 1,000,000 | |
| Holdings Count | Holding | 24 | |
| Investment Company, Portfolio Turnover | 1% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $1 Total numbe r of 24 Portfolio turnover rate 1 % | |
| Holdings [Text Block] | Portfolio holdings by fund type Growth-and-income funds 31.84% Growth funds 25.16% Fixed income funds 22.14% Balanced funds 13.08% Equity-income funds 7.87% Other assets less liabilities (0.09) Total 100.00% | |
| American Funds IS 2035 Target Date Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2035 Target Date Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2035 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $ 0.07%* *Annualized | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.07% | [1] |
| Net Assets | $ 1,000,000 | |
| Holdings Count | Holding | 24 | |
| Investment Company, Portfolio Turnover | 1% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions $ Total num ber 24 Portfolio turnover rate 1 % | |
| Holdings [Text Block] | Portfolio holdings by fund type Growth-and-income funds 31.84 % Growth funds 25.16 % Fixed income funds 22.14 % Balanced funds 13.08 % Equity-income funds 7.87 % Other assets less liabilities (0.09 ) % Total 100.00 % | |
| American Funds IS 2035 Target Date Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2035 Target Date Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2035 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? ed on Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $ 0.07%* | |
| Expenses Paid, Amount | $ 4 | |
| Expense Ratio, Percent | 0.07% | [1] |
| Net Assets | $ 1,000,000 | |
| Holdings Count | Holding | 24 | |
| Investment Company, Portfolio Turnover | 1% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 24 Portfolio turnover rate 1 % | |
| Holdings [Text Block] | Portfolio holdings by fund type Growth-and-income funds 31.84% Growth funds 25.16% Fixed income funds 22.14% Balanced funds 13.08% Equity-income funds 7.87% Other assets less liabilities (0.09) Total 100.00% | |
| American Funds IS 2035 Target Date Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2035 Target Date Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2035 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $ 0.57%* *Annualized | |
| Expenses Paid, Amount | $ 29 | |
| Expense Ratio, Percent | 0.57% | [1] |
| Net Assets | $ 1,000,000 | |
| Holdings Count | Holding | 24 | |
| Investment Company, Portfolio Turnover | 1% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund ne $ Total number of portfolio holdings 24 Portfolio turnover rate 1 % | |
| Holdings [Text Block] | Portfolio holdings by fund type Growth-and-income funds 31.84% Growth funds 25.16 % Fixed income funds 22.14 % Balanced funds 13.08 % Equity-income funds 7.87 % Other assets less liabilities (0.09 ) % Total 100.00% | |
| American Funds IS 2030 Target Date Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds® IS 2030 Target Date Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds IS 2030 Target Date Fund for the period from January 1, 2024 to June 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? 0,000 Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $3 0.06%* *Annualized | |
| Expenses Paid, Amount | $ 3 | |
| Expense Ratio, Percent | 0.06% | [1] |
| Net Assets | $ 494,000 | |
| Holdings Count | Holding | 23 | |
| Investment Company, Portfolio Turnover | 6% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in tho $494 Total number of portfolio holdings 23 Portfolio turnover rate 6 % | |
| Holdings [Text Block] | Portfolio holdings by fund type Fixed income 32.39% Growth-and-income funds 27.93% Growth funds 18.42% Balanced funds 13.36% Equity-income funds 8.10% Other assets less liabilities (0.20) Total 100.00% | |
| Growth-Income Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Growth-Income Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? 0 in estm Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $28 0.53%* *Annualized | |
| Expenses Paid, Amount | $ 28 | |
| Expense Ratio, Percent | 0.53% | [1] |
| Net Assets | $ 40,108,000,000 | |
| Holdings Count | Holding | 161 | |
| Investment Company, Portfolio Turnover | 36% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $40,108 Total number of portfolio holdings 161 Portfolio turnover rate 36% | |
| Holdings [Text Block] | Portfolio holdings by sector | |
| Growth-Income Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Growth-Income Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? hypot 10,000 stme Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $28 0.53%* *Annualized | |
| Expenses Paid, Amount | $ 28 | |
| Expense Ratio, Percent | 0.53% | [1] |
| Net Assets | $ 40,108,000,000 | |
| Holdings Count | Holding | 161 | |
| Investment Company, Portfolio Turnover | 36% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $40,108 Total number of portfolio holdings 161 Portfolio turnover rate 36% | |
| Holdings [Text Block] | Portfolio | |
| Growth-Income Fund (Class 3) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Growth-Income Fund | |
| Class Name | Class 3 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-3 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-3 | |
| Expenses [Text Block] | What were the fund costs for the last six months? 10,000 Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 3 $24 0.46%* *Annualized | |
| Expenses Paid, Amount | $ 24 | |
| Expense Ratio, Percent | 0.46% | [1] |
| Net Assets | $ 40,108,000,000 | |
| Holdings Count | Holding | 161 | |
| Investment Company, Portfolio Turnover | 36% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $40,108 Total number of portfolio holdings 161 Portfolio turnover rate 36% | |
| Holdings [Text Block] | Portfolio | |
| Growth-Income Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Growth-Income Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? 10,000 vestm Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $42 0.78%* *Annualized | |
| Expenses Paid, Amount | $ 42 | |
| Expense Ratio, Percent | 0.78% | [1] |
| Net Assets | $ 40,108,000,000 | |
| Holdings Count | Holding | 161 | |
| Investment Company, Portfolio Turnover | 36% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $40,108 Total number of portfolio holdings 161 Portfolio turnover rate 36% | |
| Holdings [Text Block] | Portfolio | |
| International Growth and Income Fund (class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | International Growth and Income Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? se 10,000 stm Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $29 0.56%* *Annualized | |
| Expenses Paid, Amount | $ 29 | |
| Expense Ratio, Percent | 0.56% | [1] |
| Net Assets | $ 330,051,000 | |
| Holdings Count | Holding | 255 | |
| Investment Company, Portfolio Turnover | 18% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $330,051 Total number of portfolio holdings 255 Portfolio turnover rate 18% | |
| Holdings [Text Block] | Portfolio | |
| International Growth and Income Fund (class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | International Growth and Income Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? hypothetica vestm Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $41 0.81%* *Annualized | |
| Expenses Paid, Amount | $ 41 | |
| Expense Ratio, Percent | 0.81% | [1] |
| Net Assets | $ 330,051,000 | |
| Holdings Count | Holding | 255 | |
| Investment Company, Portfolio Turnover | 18% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in th ousa $330,051 Total number of portfolio 255 Portfolio turnover rate 18% | |
| Holdings [Text Block] | Portfolio rcen | |
| International Growth and Income Fund (class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | International Growth and Income Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? 10,000 stm Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $41 0.81%* *Annualized | |
| Expenses Paid, Amount | $ 41 | |
| Expense Ratio, Percent | 0.81% | [1] |
| Net Assets | $ 330,051,000 | |
| Holdings Count | Holding | 255 | |
| Investment Company, Portfolio Turnover | 18% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $330,051 Total number of portfolio holdings 255 Portfolio turnover rate 18% | |
| Holdings [Text Block] | Portfolio | |
| International Growth and Income Fund (class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | International Growth and Income Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? 1 0,00 vest Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $54 1.06%* *Annualized | |
| Expenses Paid, Amount | $ 54 | |
| Expense Ratio, Percent | 1.06% | [1] |
| Net Assets | $ 330,051,000 | |
| Holdings Count | Holding | 255 | |
| Investment Company, Portfolio Turnover | 18% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $330,051 Total number of portfolio holdings 255 Portfolio turnover rate 18% | |
| Holdings [Text Block] | Portfolio holdings by sector | |
| Capital Income Builder (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Capital Income Builder | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? sed 10,000 e Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $14 0.27%* *Annualized | |
| Expenses Paid, Amount | $ 14 | |
| Expense Ratio, Percent | 0.27% | [1] |
| Net Assets | $ 1,310,000,000 | |
| Holdings Count | Holding | 941 | |
| Investment Company, Portfolio Turnover | 66% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $1,310 Total number of portfolio holdings 941 Portfolio turnover rate including 66% Portfolio turnover rate excluding mortgage dollar roll transactions 26% | |
| Holdings [Text Block] | Portfolio holdings by sector *Includes derivatives. | |
| Capital Income Builder (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Capital Income Builder | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $ 0.52%* *Annualized | |
| Expenses Paid, Amount | $ 26 | |
| Expense Ratio, Percent | 0.52% | [1] |
| Net Assets | $ 1,310,000,000 | |
| Holdings Count | Holding | 941 | |
| Investment Company, Portfolio Turnover | 66% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 941 Portfolio turnover rate including 66% Portfolio turnover rate excluding mortgage dollar roll transactions 26 % | |
| Holdings [Text Block] | Portfolio holdings by sector *Includes derivatives. | |
| Capital Income Builder (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Capital Income Builder | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at c apitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $ 0.52 % * *Annualized | |
| Expenses Paid, Amount | $ 26 | |
| Expense Ratio, Percent | 0.52% | [1] |
| Net Assets | $ 1,310,000,000 | |
| Holdings Count | Holding | 941 | |
| Investment Company, Portfolio Turnover | 66% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions $ Total number of portfolio holdings 941 Portfolio turnover rate including 66 % Portfolio turnover rate excluding mortgage dollar roll transactions 26 % | |
| Holdings [Text Block] | Portfolio holdings by sector *Includes derivatives. | |
| Capital Income Builder (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Capital Income Builder | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? 10,000 vestm Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $39 0.77%* * Annualized | |
| Expenses Paid, Amount | $ 39 | |
| Expense Ratio, Percent | 0.77% | [1] |
| Net Assets | $ 1,310,000,000 | |
| Holdings Count | Holding | 941 | |
| Investment Company, Portfolio Turnover | 66% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions $1,310 Total number of portfolio holdings 941 Portfolio turnover rate including 66% Portfolio turnover rate excluding mortgage dollar roll transactions 26% | |
| Holdings [Text Block] | Portfolio holdings by sector *Includes derivatives. | |
| Asset Allocation Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Asset Allocation Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $16 0.30%* *Annualized | |
| Expenses Paid, Amount | $ 16 | |
| Expense Ratio, Percent | 0.30% | [1] |
| Net Assets | $ 26,927,000,000 | |
| Holdings Count | Holding | 1,538 | |
| Investment Company, Portfolio Turnover | 71% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $26,927 Total number of portfolio holdings 1,538 Portfolio turnover rate including 71% Portfolio turnover rate excluding mortgage dollar roll transactions 19 | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| Asset Allocation Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Asset Allocation Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $29 0.55%* *Annualized | |
| Expenses Paid, Amount | $ 29 | |
| Expense Ratio, Percent | 0.55% | [1] |
| Net Assets | $ 26,927,000,000 | |
| Holdings Count | Holding | 1,538 | |
| Investment Company, Portfolio Turnover | 71% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $26,927 Total number of portfolio holdings 1,538 Portfolio turnover rate including 71% Portfolio turnover rate excluding mortgage dollar roll transactions 19 | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| Asset Allocation Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Asset Allocation Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $29 0.55%* *Annualized | |
| Expenses Paid, Amount | $ 29 | |
| Expense Ratio, Percent | 0.55% | [1] |
| Net Assets | $ 26,927,000,000 | |
| Holdings Count | Holding | 1,538 | |
| Investment Company, Portfolio Turnover | 71% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $26,927 Total number of portfolio holdings 1,538 Portfolio turnover rate including 71% Portfolio turnover rate excluding mortgage dollar roll transactions 19 | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| Asset Allocation Fund (Class 3) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Asset Allocation Fund | |
| Class Name | Class 3 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-3 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-3 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 3 $25 0.48%* *Annualized | |
| Expenses Paid, Amount | $ 25 | |
| Expense Ratio, Percent | 0.48% | [1] |
| Net Assets | $ 26,927,000,000 | |
| Holdings Count | Holding | 1,538 | |
| Investment Company, Portfolio Turnover | 71% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $26,927 Total number of portfolio holdings 1,538 Portfolio turnover rate including 71% Portfolio turnover rate excluding mortgage dollar roll transactions 19 | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| Asset Allocation Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Asset Allocation Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $42 0.80%* *Annualized | |
| Expenses Paid, Amount | $ 42 | |
| Expense Ratio, Percent | 0.80% | [1] |
| Net Assets | $ 26,927,000,000 | |
| Holdings Count | Holding | 1,538 | |
| Investment Company, Portfolio Turnover | 71% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions $26,927 Total number of portfolio holdings 1,538 Portfolio turnover rate including 71% Portfolio turnover rate excluding mortgage dollar roll transactions 19% | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| American Funds Global Balanced Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds Global Balanced Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $26 0.51%* *Annualized | |
| Expenses Paid, Amount | $ 26 | |
| Expense Ratio, Percent | 0.51% | [1] |
| Net Assets | $ 391,797,000 | |
| Holdings Count | Holding | 628 | |
| Investment Company, Portfolio Turnover | 79% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands $391,797 Total number of portfolio holdings 628 Portfolio turnover rate including 79% Portfolio turnover rate excluding mortgage dollar roll transactions 27% | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| American Funds Global Balanced Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds Global Balanced Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $39 0.76%* *Annualized | |
| Expenses Paid, Amount | $ 39 | |
| Expense Ratio, Percent | 0.76% | [1] |
| Net Assets | $ 391,797,000 | |
| Holdings Count | Holding | 628 | |
| Investment Company, Portfolio Turnover | 79% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $391,797 Total number of portfolio holdings 628 Portfolio turnover rate including 79% Portfolio turnover rate excluding mortgage dollar roll transactions 27 | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| American Funds Global Balanced Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds Global Balanced Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 (800) 421-4225. | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $39 0.76%* *Annualized | |
| Expenses Paid, Amount | $ 39 | |
| Expense Ratio, Percent | 0.76% | [1] |
| Net Assets | $ 391,797,000 | |
| Holdings Count | Holding | 628 | |
| Investment Company, Portfolio Turnover | 79% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $391,797 Total number of portfolio holdings 628 Portfolio turnover rate including 79% Portfolio turnover rate excluding mortgage dollar roll transactions 27 | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| American Funds Global Balanced Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds Global Balanced Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $51 1.01%* *Annualized | |
| Expenses Paid, Amount | $ 51 | |
| Expense Ratio, Percent | 1.01% | [1] |
| Net Assets | $ 391,797,000 | |
| Holdings Count | Holding | 628 | |
| Investment Company, Portfolio Turnover | 79% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $391,797 Total number of portfolio holdings 628 Portfolio turnover rate including 79% Portfolio turnover rate excluding mortgage dollar roll transactions 27% | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| The Bond Fund of America (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | The Bond Fund of America | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $12 0.25%* *Annualized | |
| Expenses Paid, Amount | $ 12 | |
| Expense Ratio, Percent | 0.25% | [1] |
| Net Assets | $ 11,138,000,000 | |
| Holdings Count | Holding | 1,824 | |
| Investment Company, Portfolio Turnover | 255% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $11,138 Total number of portfolio holdings 1,824 Portfolio turnover rate including 255% Portfolio turnover rate excluding mortgage dollar roll transactions 54 | |
| Holdings [Text Block] | Portfolio holdings by asset type * † | |
| The Bond Fund of America (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | The Bond Fund of America | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A (800) 421-4225 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $25 0.50%* *Annualized | |
| Expenses Paid, Amount | $ 25 | |
| Expense Ratio, Percent | 0.50% | [1] |
| Net Assets | $ 11,138,000,000 | |
| Holdings Count | Holding | 1,824 | |
| Investment Company, Portfolio Turnover | 255% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions $11,138 Total number of portfolio holdings 1,824 Portfolio turnover rate including 255% Portfolio turnover rate excluding mortgage dollar roll transactions 54% | |
| Holdings [Text Block] | Portfolio holdings by asset type * † | |
| The Bond Fund of America (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | The Bond Fund of America | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $25 0.50%* *Annualized | |
| Expenses Paid, Amount | $ 25 | |
| Expense Ratio, Percent | 0.50% | [1] |
| Net Assets | $ 11,138,000,000 | |
| Holdings Count | Holding | 1,824 | |
| Investment Company, Portfolio Turnover | 255% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $11,138 Total number of portfolio holdings 1,824 Portfolio turnover rate including 255% Portfolio turnover rate excluding mortgage dollar roll transactions 54% | |
| Holdings [Text Block] | Portfolio holdings by asset type * † | |
| The Bond Fund of America (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | The Bond Fund of America | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $37 0.75%* *Annualized | |
| Expenses Paid, Amount | $ 37 | |
| Expense Ratio, Percent | 0.75% | [1] |
| Net Assets | $ 11,138,000,000 | |
| Holdings Count | Holding | 1,824 | |
| Investment Company, Portfolio Turnover | 255% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions $11,138 Total number of portfolio holdings 1,824 Portfolio turnover rate including 255% Portfolio turnover rate excluding mortgage dollar roll transactions 54% | |
| Holdings [Text Block] | Portfolio holdings by asset type * † | |
| Capital World Bond Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Capital World Bond Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $23 0.48%* *Annualized | |
| Expenses Paid, Amount | $ 23 | |
| Expense Ratio, Percent | 0.48% | [1] |
| Net Assets | $ 1,516,000,000 | |
| Holdings Count | Holding | 1,082 | |
| Investment Company, Portfolio Turnover | 170% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $1,516 Total number of portfolio holdings 1,082 Portfolio turnover rate including 170% Portfolio turnover rate excluding mortgage dollar roll transactions 31 | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| Capital World Bond Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Capital World Bond Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $36 0.73%* *Annualized | |
| Expenses Paid, Amount | $ 36 | |
| Expense Ratio, Percent | 0.73% | [1] |
| Net Assets | $ 1,516,000,000 | |
| Holdings Count | Holding | 1,082 | |
| Investment Company, Portfolio Turnover | 170% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $1,516 Total number of portfolio holdings 1,082 Portfolio turnover rate including 170% Portfolio turnover rate excluding mortgage dollar roll transactions 31% | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| Capital World Bond Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Capital World Bond Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $36 0.73%* *Annualized | |
| Expenses Paid, Amount | $ 36 | |
| Expense Ratio, Percent | 0.73% | [1] |
| Net Assets | $ 1,516,000,000 | |
| Holdings Count | Holding | 1,082 | |
| Investment Company, Portfolio Turnover | 170% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $1,516 Total number of portfolio holdings 1,082 Portfolio turnover rate including 170% Portfolio turnover rate excluding mortgage dollar roll transactions 31% | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| Capital World Bond Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Capital World Bond Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $48 0.98%* *Annualized | |
| Expenses Paid, Amount | $ 48 | |
| Expense Ratio, Percent | 0.98% | [1] |
| Net Assets | $ 1,516,000,000 | |
| Holdings Count | Holding | 1,082 | |
| Investment Company, Portfolio Turnover | 170% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $1,516 Total number of portfolio holdings 1,082 Portfolio turnover rate including 170% Portfolio turnover rate excluding mortgage dollar roll transactions 31% | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| American High-Income Trust (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American High-Income Trust | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $ 0.31 % * *Annualized | |
| Expenses Paid, Amount | $ 16 | |
| Expense Ratio, Percent | 0.31% | [1] |
| Net Assets | $ 892,000,000 | |
| Holdings Count | Holding | 866 | |
| Investment Company, Portfolio Turnover | 23% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $ Total number of portfolio holdings 866 Portfolio turnover rate 23 % | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| American High-Income Trust (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American High-Income Trust | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $28 0.56%* *Annualized | |
| Expenses Paid, Amount | $ 28 | |
| Expense Ratio, Percent | 0.56% | [1] |
| Net Assets | $ 892,000,000 | |
| Holdings Count | Holding | 866 | |
| Investment Company, Portfolio Turnover | 23% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $892 Total number of portfolio holdings 866 Portfolio turnover rate 23% | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| American High-Income Trust (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American High-Income Trust | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $28 0.56%* *Annualized | |
| Expenses Paid, Amount | $ 28 | |
| Expense Ratio, Percent | 0.56% | [1] |
| Net Assets | $ 892,000,000 | |
| Holdings Count | Holding | 866 | |
| Investment Company, Portfolio Turnover | 23% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $892 Total number of portfolio holdings 866 Portfolio turnover rate 23% | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| American High-Income Trust (Class 3) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American High-Income Trust | |
| Class Name | Class 3 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-3 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-3 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 3 $25 0.49%* *Annualized | |
| Expenses Paid, Amount | $ 25 | |
| Expense Ratio, Percent | 0.49% | [1] |
| Net Assets | $ 892,000,000 | |
| Holdings Count | Holding | 866 | |
| Investment Company, Portfolio Turnover | 23% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $892 Total number of portfolio holdings 866 Portfolio turnover 23% | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| American High-Income Trust (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American High-Income Trust | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $41 0.81%* *Annualized | |
| Expenses Paid, Amount | $ 41 | |
| Expense Ratio, Percent | 0.81% | [1] |
| Net Assets | $ 892,000,000 | |
| Holdings Count | Holding | 866 | |
| Investment Company, Portfolio Turnover | 23% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $892 Total number of portfolio holdings 866 Portfolio turnover rate 23% | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| American Funds Mortgage Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds Mortgage Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $14 0.28%* *Annualized | |
| Expenses Paid, Amount | $ 14 | |
| Expense Ratio, Percent | 0.28% | [1] |
| Net Assets | $ 110,368,000 | |
| Holdings Count | Holding | 313 | |
| Investment Company, Portfolio Turnover | 373% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $110,368 Total number of portfolio holdings 313 Portfolio turnover rate including 373% Portfolio turnover rate excluding mortgage dollar roll transactions 25% | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| American Funds Mortgage Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds Mortgage Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $26 0.53%* *Annualized | |
| Expenses Paid, Amount | $ 26 | |
| Expense Ratio, Percent | 0.53% | [1] |
| Net Assets | $ 110,368,000 | |
| Holdings Count | Holding | 313 | |
| Investment Company, Portfolio Turnover | 373% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $110,368 Total number of portfolio holdings 313 Portfolio turnover rate including 373% Portfolio turnover rate excluding mortgage dollar roll transactions 25 | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| American Funds Mortgage Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds Mortgage Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $26 0.53%* *Annualized | |
| Expenses Paid, Amount | $ 26 | |
| Expense Ratio, Percent | 0.53% | [1] |
| Net Assets | $ 110,368,000 | |
| Holdings Count | Holding | 313 | |
| Investment Company, Portfolio Turnover | 373% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $110,368 Total number of portfolio holdings 313 Portfolio turnover rate including 373% Portfolio turnover rate excluding mortgage dollar roll transactions 25% | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| American Funds Mortgage Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | American Funds Mortgage Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $39 0.78%* *Annualized | |
| Expenses Paid, Amount | $ 39 | |
| Expense Ratio, Percent | 0.78% | [1] |
| Net Assets | $ 110,368,000 | |
| Holdings Count | Holding | 313 | |
| Investment Company, Portfolio Turnover | 373% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $110,368 Total number of portfolio holdings 313 Portfolio turnover rate including 373% Portfolio turnover rate excluding mortgage 25% | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| Ultra-Short Bond Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Ultra-Short Bond Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $15 0.29%* *Annualized | |
| Expenses Paid, Amount | $ 15 | |
| Expense Ratio, Percent | 0.29% | [1] |
| Net Assets | $ 355,282,000 | |
| Holdings Count | Holding | 34 | |
| Investment Company, Portfolio Turnover | 0% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $355,282 Total number of portfolio holdings 34 Portfolio turnover rate None | |
| Holdings [Text Block] | Portfolio holdings by asset type | |
| Ultra-Short Bond Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Ultra-Short Bond Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $ 0.52 % * | |
| Expenses Paid, Amount | $ 26 | |
| Expense Ratio, Percent | 0.52% | [1] |
| Net Assets | $ 355,282,000 | |
| Holdings Count | Holding | 34 | |
| Investment Company, Portfolio Turnover | 0% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $ Total number of portfolio holdings 34 Portfolio turnover rate None | |
| Holdings [Text Block] | Portfolio holdings by asset type | |
| Ultra-Short Bond Fund (Class 2) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Ultra-Short Bond Fund | |
| Class Name | Class 2 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-2 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-2 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $27 0.54 % * *Annualized | |
| Expenses Paid, Amount | $ 27 | |
| Expense Ratio, Percent | 0.54% | [1] |
| Net Assets | $ 355,282,000 | |
| Holdings Count | Holding | 34 | |
| Investment Company, Portfolio Turnover | 0% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $355,282 Total number of portfolio holdings 34 Portfolio turnover rate None | |
| Holdings [Text Block] | Portfolio holdings by asset type | |
| Ultra-Short Bond Fund (Class 3) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Ultra-Short Bond Fund | |
| Class Name | Class 3 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-3 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-3 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 3 $24 0.47%* *Annualized | |
| Expenses Paid, Amount | $ 24 | |
| Expense Ratio, Percent | 0.47% | [1] |
| Net Assets | $ 355,282,000 | |
| Holdings Count | Holding | 34 | |
| Investment Company, Portfolio Turnover | 0% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $355,282 Total number of portfolio holdings 34 Portfolio turnover rate None | |
| Holdings [Text Block] | Portfolio holdings by asset type | |
| Ultra-Short Bond Fund (Class 4) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Ultra-Short Bond Fund | |
| Class Name | Class 4 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-4 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-4 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 4 $40 0.79%* *Annualized | |
| Expenses Paid, Amount | $ 40 | |
| Expense Ratio, Percent | 0.79% | [1] |
| Net Assets | $ 355,282,000 | |
| Holdings Count | Holding | 34 | |
| Investment Company, Portfolio Turnover | 0% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in thousands) $355,282 Total number of portfolio holdings 34 Portfolio turnover rate None | |
| Holdings [Text Block] | Portfolio holdings by asset type | |
| U.S. Government Securities Fund (Class 1) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | U.S. Government Securities Fund | |
| Class Name | Class 1 | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1 | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1 | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $13 0.27%* *Annualized | |
| Expenses Paid, Amount | $ 13 | |
| Expense Ratio, Percent | 0.27% | [1] |
| Net Assets | $ 1,722,000,000 | |
| Holdings Count | Holding | 602 | |
| Investment Company, Portfolio Turnover | 204% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $1,722 Total number of portfolio holdings 602 Portfolio turnover rate including 204% Portfolio turnover rate excluding mortgage dollar roll transactions 17% | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| U.S. Government Securities Fund (Class 1A) | ||
| Shareholder Report [Line Items] | ||
| Fund Name | U.S. Government Securities Fund | |
| Class Name | Class 1A | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about American Funds Insurance Series - | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the fund at capitalgroup.com/AFIS-literature-1A | |
| Additional Information Phone Number | (800) 421-4225 | |
| Additional Information Website | capitalgroup.com/AFIS-literature-1A | |
| Expenses [Text Block] | What were the fund costs for the last six months? Share class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1A $25 0.51%* *Annualized | |
| Expenses Paid, Amount | $ 25 | |
| Expense Ratio, Percent | 0.51% | [1] |
| Net Assets | $ 1,722,000,000 | |
| Holdings Count | Holding | 602 | |
| Investment Company, Portfolio Turnover | 204% | |
| Additional Fund Statistics [Text Block] | Key fund statistics Fund net assets (in millions) $1,722 Total number of portfolio holdings 602 Portfolio turnover rate including 204% Portfolio turnover rate excluding mortgage dollar roll transactions 17% | |
| Holdings [Text Block] | Portfolio holdings by asset type *Includes derivatives. | |
| [1]Annualized.[2]Amount less than $1.[3]Based on operations for the period from May 1, 2024 to June 30, 2024. Expenses for the full 6 months would be higher.[4]Amount less than 0.01%. | ||
| Shareholder Report, Holdings (Details) | Jun. 30, 2024 | |
| U.S. Government Securities Fund (Class 1A) | Mortgage-backed obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 59.12% | |
| U.S. Government Securities Fund (Class 1A) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 34.36% | |
| U.S. Government Securities Fund (Class 1A) | Federal agency bonds & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.24% | |
| U.S. Government Securities Fund (Class 1A) | Options purchased [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.03% | |
| U.S. Government Securities Fund (Class 1A) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.25% | [1] |
| U.S. Government Securities Fund (Class 1) | Mortgage-backed obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 59.12% | |
| U.S. Government Securities Fund (Class 1) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 34.36% | |
| U.S. Government Securities Fund (Class 1) | Federal agency bonds & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.24% | |
| U.S. Government Securities Fund (Class 1) | Options purchased [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.03% | |
| U.S. Government Securities Fund (Class 1) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.25% | [1] |
| Ultra-Short Bond Fund (Class 4) | Commercial paper [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 93.14% | |
| Ultra-Short Bond Fund (Class 4) | U.S. Treasury bills [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.81% | |
| Ultra-Short Bond Fund (Class 4) | Federal agency bills & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.94% | |
| Ultra-Short Bond Fund (Class 4) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.11% | |
| Ultra-Short Bond Fund (Class 3) | Commercial paper [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 93.14% | |
| Ultra-Short Bond Fund (Class 3) | U.S. Treasury bills [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.81% | |
| Ultra-Short Bond Fund (Class 3) | Federal agency bills & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.94% | |
| Ultra-Short Bond Fund (Class 3) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.11% | |
| Ultra-Short Bond Fund (Class 2) | Commercial paper [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 93.14% | |
| Ultra-Short Bond Fund (Class 2) | U.S. Treasury bills [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.81% | |
| Ultra-Short Bond Fund (Class 2) | Federal agency bills & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.94% | |
| Ultra-Short Bond Fund (Class 2) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.11% | |
| Ultra-Short Bond Fund (Class 1A) | Commercial paper [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 93.14% | |
| Ultra-Short Bond Fund (Class 1A) | U.S. Treasury bills [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.81% | |
| Ultra-Short Bond Fund (Class 1A) | Federal agency bills & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.94% | |
| Ultra-Short Bond Fund (Class 1A) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.11% | |
| Ultra-Short Bond Fund (Class 1) | Commercial paper [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 93.14% | |
| Ultra-Short Bond Fund (Class 1) | U.S. Treasury bills [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.81% | |
| Ultra-Short Bond Fund (Class 1) | Federal agency bills & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.94% | |
| Ultra-Short Bond Fund (Class 1) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.11% | |
| American Funds Mortgage Fund (Class 4) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.04% | |
| American Funds Mortgage Fund (Class 4) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.92% | [1] |
| American Funds Mortgage Fund (Class 4) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 88.85% | |
| American Funds Mortgage Fund (Class 4) | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.19% | |
| American Funds Mortgage Fund (Class 2) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.04% | |
| American Funds Mortgage Fund (Class 2) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.92% | [1] |
| American Funds Mortgage Fund (Class 2) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 88.85% | |
| American Funds Mortgage Fund (Class 2) | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.19% | |
| American Funds Mortgage Fund (Class 1A) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.04% | |
| American Funds Mortgage Fund (Class 1A) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.92% | [1] |
| American Funds Mortgage Fund (Class 1A) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 88.85% | |
| American Funds Mortgage Fund (Class 1A) | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.19% | |
| American Funds Mortgage Fund (Class 1) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.04% | |
| American Funds Mortgage Fund (Class 1) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.92% | [1] |
| American Funds Mortgage Fund (Class 1) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 88.85% | |
| American Funds Mortgage Fund (Class 1) | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.19% | |
| American High-Income Trust (Class 4) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.10% | |
| American High-Income Trust (Class 4) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.56% | [1] |
| American High-Income Trust (Class 4) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.08% | |
| American High-Income Trust (Class 4) | Corporate bonds notes and loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 89.63% | |
| American High-Income Trust (Class 4) | Bonds and notes of governments and government agencies outside the U S [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.04% | |
| American High-Income Trust (Class 4) | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.14% | |
| American High-Income Trust (Class 4) | Preferred securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.35% | |
| American High-Income Trust (Class 4) | Rights & warrants [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.03% | |
| American High-Income Trust (Class 4) | Convertible bonds & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.07% | |
| American High-Income Trust (Class 3) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.10% | |
| American High-Income Trust (Class 3) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.56% | [1] |
| American High-Income Trust (Class 3) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.08% | |
| American High-Income Trust (Class 3) | Corporate bonds notes and loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 89.63% | |
| American High-Income Trust (Class 3) | Bonds and notes of governments and government agencies outside the U S [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.04% | |
| American High-Income Trust (Class 3) | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.14% | |
| American High-Income Trust (Class 3) | Preferred securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.35% | |
| American High-Income Trust (Class 3) | Rights & warrants [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.03% | |
| American High-Income Trust (Class 3) | Convertible bonds & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.07% | |
| American High-Income Trust (Class 2) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.10% | |
| American High-Income Trust (Class 2) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.56% | [1] |
| American High-Income Trust (Class 2) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.08% | |
| American High-Income Trust (Class 2) | Corporate bonds notes and loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 89.63% | |
| American High-Income Trust (Class 2) | Bonds and notes of governments and government agencies outside the U S [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.04% | |
| American High-Income Trust (Class 2) | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.14% | |
| American High-Income Trust (Class 2) | Preferred securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.35% | |
| American High-Income Trust (Class 2) | Rights & warrants [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.03% | |
| American High-Income Trust (Class 2) | Convertible bonds & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.07% | |
| American High-Income Trust (Class 1A) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.10% | |
| American High-Income Trust (Class 1A) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.56% | [1] |
| American High-Income Trust (Class 1A) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.08% | |
| American High-Income Trust (Class 1A) | Corporate bonds notes and loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 89.63% | |
| American High-Income Trust (Class 1A) | Bonds and notes of governments and government agencies outside the U S [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.04% | |
| American High-Income Trust (Class 1A) | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.14% | |
| American High-Income Trust (Class 1A) | Preferred securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.35% | |
| American High-Income Trust (Class 1A) | Rights & warrants [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.03% | |
| American High-Income Trust (Class 1A) | Convertible bonds & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.07% | |
| American High-Income Trust (Class 1) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.10% | |
| American High-Income Trust (Class 1) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.56% | [1] |
| American High-Income Trust (Class 1) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.08% | |
| American High-Income Trust (Class 1) | Corporate bonds notes and loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 89.63% | |
| American High-Income Trust (Class 1) | Bonds and notes of governments and government agencies outside the U S [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.04% | |
| American High-Income Trust (Class 1) | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.14% | |
| American High-Income Trust (Class 1) | Preferred securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.35% | |
| American High-Income Trust (Class 1) | Rights & warrants [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.03% | |
| American High-Income Trust (Class 1) | Convertible bonds & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.07% | |
| Capital World Bond Fund (Class 4) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.46% | |
| Capital World Bond Fund (Class 4) | Federal agency bonds & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.19% | |
| Capital World Bond Fund (Class 4) | Options purchased [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.06% | |
| Capital World Bond Fund (Class 4) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.87% | [1] |
| Capital World Bond Fund (Class 4) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 20.86% | |
| Capital World Bond Fund (Class 4) | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.71% | |
| Capital World Bond Fund (Class 4) | Corporate bonds notes and loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 26.99% | |
| Capital World Bond Fund (Class 4) | Bonds and notes of governments and government agencies outside the U S [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 41.25% | |
| Capital World Bond Fund (Class 4) | Supranational debt [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.16% | |
| Capital World Bond Fund (Class 4) | Investment funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.36% | |
| Capital World Bond Fund (Class 4) | Other securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.09% | |
| Capital World Bond Fund (Class 2) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.46% | |
| Capital World Bond Fund (Class 2) | Federal agency bonds & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.19% | |
| Capital World Bond Fund (Class 2) | Options purchased [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.06% | |
| Capital World Bond Fund (Class 2) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.87% | [1] |
| Capital World Bond Fund (Class 2) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 20.86% | |
| Capital World Bond Fund (Class 2) | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.71% | |
| Capital World Bond Fund (Class 2) | Corporate bonds notes and loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 26.99% | |
| Capital World Bond Fund (Class 2) | Bonds and notes of governments and government agencies outside the U S [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 41.25% | |
| Capital World Bond Fund (Class 2) | Supranational debt [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.16% | |
| Capital World Bond Fund (Class 2) | Investment funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.36% | |
| Capital World Bond Fund (Class 2) | Other securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.09% | |
| Capital World Bond Fund (Class 1A) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.46% | |
| Capital World Bond Fund (Class 1A) | Federal agency bonds & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.19% | |
| Capital World Bond Fund (Class 1A) | Options purchased [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.06% | |
| Capital World Bond Fund (Class 1A) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.87% | [1] |
| Capital World Bond Fund (Class 1A) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 20.86% | |
| Capital World Bond Fund (Class 1A) | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.71% | |
| Capital World Bond Fund (Class 1A) | Corporate bonds notes and loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 26.99% | |
| Capital World Bond Fund (Class 1A) | Bonds and notes of governments and government agencies outside the U S [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 41.25% | |
| Capital World Bond Fund (Class 1A) | Supranational debt [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.16% | |
| Capital World Bond Fund (Class 1A) | Investment funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.36% | |
| Capital World Bond Fund (Class 1A) | Other securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.09% | |
| Capital World Bond Fund (Class 1) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.46% | |
| Capital World Bond Fund (Class 1) | Federal agency bonds & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.19% | |
| Capital World Bond Fund (Class 1) | Options purchased [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.06% | |
| Capital World Bond Fund (Class 1) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.87% | [1] |
| Capital World Bond Fund (Class 1) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 20.86% | |
| Capital World Bond Fund (Class 1) | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.71% | |
| Capital World Bond Fund (Class 1) | Corporate bonds notes and loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 26.99% | |
| Capital World Bond Fund (Class 1) | Bonds and notes of governments and government agencies outside the U S [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 41.25% | |
| Capital World Bond Fund (Class 1) | Supranational debt [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.16% | |
| Capital World Bond Fund (Class 1) | Investment funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.36% | |
| Capital World Bond Fund (Class 1) | Other securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.09% | |
| The Bond Fund of America (Class 4) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 17.41% | |
| The Bond Fund of America (Class 4) | Federal agency bonds & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.10% | |
| The Bond Fund of America (Class 4) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.89% | [1] |
| The Bond Fund of America (Class 4) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 41.39% | |
| The Bond Fund of America (Class 4) | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.15% | |
| The Bond Fund of America (Class 4) | Corporate bonds notes and loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 30.52% | |
| The Bond Fund of America (Class 4) | Bonds and notes of governments and government agencies outside the U S [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.03% | |
| The Bond Fund of America (Class 4) | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| The Bond Fund of America (Class 4) | Municipals [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.51% | |
| The Bond Fund of America (Class 2) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 17.41% | |
| The Bond Fund of America (Class 2) | Federal agency bonds & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.10% | |
| The Bond Fund of America (Class 2) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.89% | [1] |
| The Bond Fund of America (Class 2) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 41.39% | |
| The Bond Fund of America (Class 2) | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.15% | |
| The Bond Fund of America (Class 2) | Corporate bonds notes and loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 30.52% | |
| The Bond Fund of America (Class 2) | Bonds and notes of governments and government agencies outside the U S [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.03% | |
| The Bond Fund of America (Class 2) | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| The Bond Fund of America (Class 2) | Municipals [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.51% | |
| The Bond Fund of America (Class 1A) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 17.41% | |
| The Bond Fund of America (Class 1A) | Federal agency bonds & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.10% | |
| The Bond Fund of America (Class 1A) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.89% | [1] |
| The Bond Fund of America (Class 1A) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 41.39% | |
| The Bond Fund of America (Class 1A) | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.15% | |
| The Bond Fund of America (Class 1A) | Corporate bonds notes and loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 30.52% | |
| The Bond Fund of America (Class 1A) | Bonds and notes of governments and government agencies outside the U S [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.03% | |
| The Bond Fund of America (Class 1A) | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| The Bond Fund of America (Class 1A) | Municipals [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.51% | |
| The Bond Fund of America (Class 1) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 17.41% | |
| The Bond Fund of America (Class 1) | Federal agency bonds & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.10% | |
| The Bond Fund of America (Class 1) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.89% | [1] |
| The Bond Fund of America (Class 1) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 41.39% | |
| The Bond Fund of America (Class 1) | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.15% | |
| The Bond Fund of America (Class 1) | Corporate bonds notes and loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 30.52% | |
| The Bond Fund of America (Class 1) | Bonds and notes of governments and government agencies outside the U S [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.03% | |
| The Bond Fund of America (Class 1) | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| The Bond Fund of America (Class 1) | Municipals [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.51% | |
| American Funds Global Balanced Fund (Class 4) | Mortgage-backed obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.90% | |
| American Funds Global Balanced Fund (Class 4) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.34% | |
| American Funds Global Balanced Fund (Class 4) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.77% | [1] |
| American Funds Global Balanced Fund (Class 4) | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.31% | |
| American Funds Global Balanced Fund (Class 4) | Corporate bonds notes and loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.83% | |
| American Funds Global Balanced Fund (Class 4) | Bonds and notes of governments and government agencies outside the U S [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.95% | |
| American Funds Global Balanced Fund (Class 4) | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 64.24% | |
| American Funds Global Balanced Fund (Class 4) | Investment funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.99% | |
| American Funds Global Balanced Fund (Class 4) | Other securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.17% | |
| American Funds Global Balanced Fund (Class 4) | Convertible Preferred Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.50% | |
| American Funds Global Balanced Fund (Class 2) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.34% | |
| American Funds Global Balanced Fund (Class 2) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.77% | [1] |
| American Funds Global Balanced Fund (Class 2) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.90% | |
| American Funds Global Balanced Fund (Class 2) | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.31% | |
| American Funds Global Balanced Fund (Class 2) | Corporate bonds notes and loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.83% | |
| American Funds Global Balanced Fund (Class 2) | Bonds and notes of governments and government agencies outside the U S [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.95% | |
| American Funds Global Balanced Fund (Class 2) | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 64.24% | |
| American Funds Global Balanced Fund (Class 2) | Investment funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.99% | |
| American Funds Global Balanced Fund (Class 2) | Other securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.17% | |
| American Funds Global Balanced Fund (Class 2) | Convertible Preferred Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.50% | |
| American Funds Global Balanced Fund (Class 1A) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.34% | |
| American Funds Global Balanced Fund (Class 1A) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.77% | [1] |
| American Funds Global Balanced Fund (Class 1A) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.90% | |
| American Funds Global Balanced Fund (Class 1A) | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.31% | |
| American Funds Global Balanced Fund (Class 1A) | Corporate bonds notes and loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.83% | |
| American Funds Global Balanced Fund (Class 1A) | Bonds and notes of governments and government agencies outside the U S [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.95% | |
| American Funds Global Balanced Fund (Class 1A) | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 64.24% | |
| American Funds Global Balanced Fund (Class 1A) | Investment funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.99% | |
| American Funds Global Balanced Fund (Class 1A) | Other securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.17% | |
| American Funds Global Balanced Fund (Class 1A) | Convertible Preferred Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.50% | |
| American Funds Global Balanced Fund (Class 1) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.34% | |
| American Funds Global Balanced Fund (Class 1) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.77% | [1] |
| American Funds Global Balanced Fund (Class 1) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.90% | |
| American Funds Global Balanced Fund (Class 1) | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.31% | |
| American Funds Global Balanced Fund (Class 1) | Corporate bonds notes and loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.83% | |
| American Funds Global Balanced Fund (Class 1) | Bonds and notes of governments and government agencies outside the U S [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.95% | |
| American Funds Global Balanced Fund (Class 1) | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 64.24% | |
| American Funds Global Balanced Fund (Class 1) | Investment funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.99% | |
| American Funds Global Balanced Fund (Class 1) | Other securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.17% | |
| American Funds Global Balanced Fund (Class 1) | Convertible Preferred Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.50% | |
| Asset Allocation Fund (Class 4) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.04% | |
| Asset Allocation Fund (Class 4) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.76% | [1] |
| Asset Allocation Fund (Class 4) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.11% | |
| Asset Allocation Fund (Class 4) | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.30% | |
| Asset Allocation Fund (Class 4) | Corporate bonds notes and loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.90% | |
| Asset Allocation Fund (Class 4) | Bonds and notes of governments and government agencies outside the U S [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.18% | |
| Asset Allocation Fund (Class 4) | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 68.26% | |
| Asset Allocation Fund (Class 4) | Investment funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.29% | |
| Asset Allocation Fund (Class 4) | Other securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.05% | |
| Asset Allocation Fund (Class 4) | Municipals [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.11% | |
| Asset Allocation Fund (Class 3) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.04% | |
| Asset Allocation Fund (Class 3) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.76% | [1] |
| Asset Allocation Fund (Class 3) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.11% | |
| Asset Allocation Fund (Class 3) | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.30% | |
| Asset Allocation Fund (Class 3) | Corporate bonds notes and loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.90% | |
| Asset Allocation Fund (Class 3) | Bonds and notes of governments and government agencies outside the U S [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.18% | |
| Asset Allocation Fund (Class 3) | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 68.26% | |
| Asset Allocation Fund (Class 3) | Investment funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.29% | |
| Asset Allocation Fund (Class 3) | Other securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.05% | |
| Asset Allocation Fund (Class 3) | Municipals [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.11% | |
| Asset Allocation Fund (Class 2) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.04% | |
| Asset Allocation Fund (Class 2) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.76% | [1] |
| Asset Allocation Fund (Class 2) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.11% | |
| Asset Allocation Fund (Class 2) | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.30% | |
| Asset Allocation Fund (Class 2) | Corporate bonds notes and loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.90% | |
| Asset Allocation Fund (Class 2) | Bonds and notes of governments and government agencies outside the U S [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.18% | |
| Asset Allocation Fund (Class 2) | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 68.26% | |
| Asset Allocation Fund (Class 2) | Investment funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.29% | |
| Asset Allocation Fund (Class 2) | Other securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.05% | |
| Asset Allocation Fund (Class 2) | Municipals [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.11% | |
| Asset Allocation Fund (Class 1A) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.04% | |
| Asset Allocation Fund (Class 1A) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.76% | [1] |
| Asset Allocation Fund (Class 1A) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.11% | |
| Asset Allocation Fund (Class 1A) | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.30% | |
| Asset Allocation Fund (Class 1A) | Corporate bonds notes and loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.90% | |
| Asset Allocation Fund (Class 1A) | Bonds and notes of governments and government agencies outside the U S [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.18% | |
| Asset Allocation Fund (Class 1A) | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 68.26% | |
| Asset Allocation Fund (Class 1A) | Investment funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.29% | |
| Asset Allocation Fund (Class 1A) | Other securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.05% | |
| Asset Allocation Fund (Class 1A) | Municipals [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.11% | |
| Asset Allocation Fund (Class 1) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.04% | |
| Asset Allocation Fund (Class 1) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.76% | [1] |
| Asset Allocation Fund (Class 1) | Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.11% | |
| Asset Allocation Fund (Class 1) | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.30% | |
| Asset Allocation Fund (Class 1) | Corporate bonds notes and loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.90% | |
| Asset Allocation Fund (Class 1) | Bonds and notes of governments and government agencies outside the U S [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.18% | |
| Asset Allocation Fund (Class 1) | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 68.26% | |
| Asset Allocation Fund (Class 1) | Investment funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.29% | |
| Asset Allocation Fund (Class 1) | Other securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.05% | |
| Asset Allocation Fund (Class 1) | Municipals [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.11% | |
| Capital Income Builder (Class 4) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.98% | |
| Capital Income Builder (Class 4) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.61% | |
| Capital Income Builder (Class 4) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.86% | |
| Capital Income Builder (Class 4) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.11% | |
| Capital Income Builder (Class 4) | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.72% | |
| Capital Income Builder (Class 4) | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.26% | |
| Capital Income Builder (Class 4) | Utilities Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.08% | |
| Capital Income Builder (Class 4) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.42% | |
| Capital Income Builder (Class 4) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.41% | |
| Capital Income Builder (Class 4) | Bonds, notes and other debt instruments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.82% | |
| Capital Income Builder (Class 4) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.73% | [1] |
| Capital Income Builder (Class 2) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.98% | |
| Capital Income Builder (Class 2) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.61% | |
| Capital Income Builder (Class 2) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.86% | |
| Capital Income Builder (Class 2) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.11% | |
| Capital Income Builder (Class 2) | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.72% | |
| Capital Income Builder (Class 2) | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.26% | |
| Capital Income Builder (Class 2) | Utilities Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.08% | |
| Capital Income Builder (Class 2) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.42% | |
| Capital Income Builder (Class 2) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.41% | |
| Capital Income Builder (Class 2) | Bonds, notes and other debt instruments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.82% | |
| Capital Income Builder (Class 2) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.73% | [1] |
| C000176252 [Member] | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.98% | |
| C000176252 [Member] | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.61% | |
| C000176252 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.86% | |
| C000176252 [Member] | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.11% | |
| C000176252 [Member] | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.72% | |
| C000176252 [Member] | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.26% | |
| C000176252 [Member] | Utilities Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.42% | |
| C000176252 [Member] | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.08% | |
| C000176252 [Member] | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.41% | |
| C000176252 [Member] | Bonds, notes and other debt instruments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.82% | |
| C000176252 [Member] | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.73% | [1] |
| Capital Income Builder (Class 1) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.98% | |
| Capital Income Builder (Class 1) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.61% | |
| Capital Income Builder (Class 1) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.86% | |
| Capital Income Builder (Class 1) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.11% | |
| Capital Income Builder (Class 1) | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.72% | |
| Capital Income Builder (Class 1) | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.26% | |
| Capital Income Builder (Class 1) | Utilities Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.08% | |
| Capital Income Builder (Class 1) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.42% | |
| Capital Income Builder (Class 1) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.41% | |
| Capital Income Builder (Class 1) | Bonds, notes and other debt instruments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.82% | |
| Capital Income Builder (Class 1) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.73% | [1] |
| International Growth and Income Fund (class 4) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 18.53% | |
| International Growth and Income Fund (class 4) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.93% | |
| International Growth and Income Fund (class 4) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.68% | |
| International Growth and Income Fund (class 4) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.71% | |
| International Growth and Income Fund (class 4) | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.23% | |
| International Growth and Income Fund (class 4) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.91% | |
| International Growth and Income Fund (class 4) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.13% | |
| International Growth and Income Fund (class 4) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.21% | |
| International Growth and Income Fund (class 4) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.99% | |
| International Growth and Income Fund (class 4) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.68% | |
| International Growth and Income Fund (class 2) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 18.53% | |
| International Growth and Income Fund (class 2) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.93% | |
| International Growth and Income Fund (class 2) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.68% | |
| International Growth and Income Fund (class 2) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.71% | |
| International Growth and Income Fund (class 2) | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.23% | |
| International Growth and Income Fund (class 2) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.91% | |
| International Growth and Income Fund (class 2) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.13% | |
| International Growth and Income Fund (class 2) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.21% | |
| International Growth and Income Fund (class 2) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.99% | |
| International Growth and Income Fund (class 2) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.68% | |
| International Growth and Income Fund (class 1A) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 18.53% | |
| International Growth and Income Fund (class 1A) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.93% | |
| International Growth and Income Fund (class 1A) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.68% | |
| International Growth and Income Fund (class 1A) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.71% | |
| International Growth and Income Fund (class 1A) | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.23% | |
| International Growth and Income Fund (class 1A) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.91% | |
| International Growth and Income Fund (class 1A) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.13% | |
| International Growth and Income Fund (class 1A) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.21% | |
| International Growth and Income Fund (class 1A) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.99% | |
| International Growth and Income Fund (class 1A) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.68% | |
| International Growth and Income Fund (class 1) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 18.53% | |
| International Growth and Income Fund (class 1) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.93% | |
| International Growth and Income Fund (class 1) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.68% | |
| International Growth and Income Fund (class 1) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.71% | |
| International Growth and Income Fund (class 1) | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.23% | |
| International Growth and Income Fund (class 1) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.91% | |
| International Growth and Income Fund (class 1) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.13% | |
| International Growth and Income Fund (class 1) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.21% | |
| International Growth and Income Fund (class 1) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.99% | |
| International Growth and Income Fund (class 1) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.68% | |
| Growth-Income Fund (Class 4) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.67% | |
| Growth-Income Fund (Class 4) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 26.04% | |
| Growth-Income Fund (Class 4) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.53% | |
| Growth-Income Fund (Class 4) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.13% | |
| Growth-Income Fund (Class 4) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.63% | |
| Growth-Income Fund (Class 4) | Bonds, notes and other debt instruments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.01% | |
| Growth-Income Fund (Class 4) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.81% | |
| Growth-Income Fund (Class 4) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.71% | |
| Growth-Income Fund (Class 4) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.47% | |
| Growth-Income Fund (Class 3) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.67% | |
| Growth-Income Fund (Class 3) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 26.04% | |
| Growth-Income Fund (Class 3) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.53% | |
| Growth-Income Fund (Class 3) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.13% | |
| Growth-Income Fund (Class 3) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.63% | |
| Growth-Income Fund (Class 3) | Bonds, notes and other debt instruments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.01% | |
| Growth-Income Fund (Class 3) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.81% | |
| Growth-Income Fund (Class 3) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.71% | |
| Growth-Income Fund (Class 3) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.47% | |
| Growth-Income Fund (Class 2) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.67% | |
| Growth-Income Fund (Class 2) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 26.04% | |
| Growth-Income Fund (Class 2) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.53% | |
| Growth-Income Fund (Class 2) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.13% | |
| Growth-Income Fund (Class 2) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.63% | |
| Growth-Income Fund (Class 2) | Bonds, notes and other debt instruments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.01% | |
| Growth-Income Fund (Class 2) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.81% | |
| Growth-Income Fund (Class 2) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.71% | |
| Growth-Income Fund (Class 2) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.47% | |
| Growth-Income Fund (Class 1A) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.67% | |
| Growth-Income Fund (Class 1A) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 26.04% | |
| Growth-Income Fund (Class 1A) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.53% | |
| Growth-Income Fund (Class 1A) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.13% | |
| Growth-Income Fund (Class 1A) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.63% | |
| Growth-Income Fund (Class 1A) | Bonds, notes and other debt instruments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.01% | |
| Growth-Income Fund (Class 1A) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.81% | |
| Growth-Income Fund (Class 1A) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.71% | |
| Growth-Income Fund (Class 1A) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.47% | |
| American Funds IS 2030 Target Date Fund (Class 1) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.20%) | |
| American Funds IS 2030 Target Date Fund (Class 1) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 32.39% | |
| American Funds IS 2030 Target Date Fund (Class 1) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 27.93% | |
| American Funds IS 2030 Target Date Fund (Class 1) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 18.42% | |
| American Funds IS 2030 Target Date Fund (Class 1) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.36% | |
| American Funds IS 2030 Target Date Fund (Class 1) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.10% | |
| American Funds IS 2030 Target Date Fund (Class 1) | Total [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2035 Target Date Fund (Class 4) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.09%) | |
| American Funds IS 2035 Target Date Fund (Class 4) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 22.14% | |
| American Funds IS 2035 Target Date Fund (Class 4) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 31.84% | |
| American Funds IS 2035 Target Date Fund (Class 4) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 25.16% | |
| American Funds IS 2035 Target Date Fund (Class 4) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.08% | |
| American Funds IS 2035 Target Date Fund (Class 4) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 7.87% | |
| American Funds IS 2035 Target Date Fund (Class 4) | Total [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2035 Target Date Fund (Class 2) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.09%) | |
| American Funds IS 2035 Target Date Fund (Class 2) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 22.14% | |
| American Funds IS 2035 Target Date Fund (Class 2) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 31.84% | |
| American Funds IS 2035 Target Date Fund (Class 2) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 25.16% | |
| American Funds IS 2035 Target Date Fund (Class 2) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.08% | |
| American Funds IS 2035 Target Date Fund (Class 2) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 7.87% | |
| American Funds IS 2035 Target Date Fund (Class 2) | Total [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2035 Target Date Fund (Class 1A) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.09%) | |
| American Funds IS 2035 Target Date Fund (Class 1A) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 22.14% | |
| American Funds IS 2035 Target Date Fund (Class 1A) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 31.84% | |
| American Funds IS 2035 Target Date Fund (Class 1A) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 25.16% | |
| American Funds IS 2035 Target Date Fund (Class 1A) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.08% | |
| American Funds IS 2035 Target Date Fund (Class 1A) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 7.87% | |
| American Funds IS 2035 Target Date Fund (Class 1A) | Total [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2035 Target Date Fund (Class 1) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.09%) | |
| American Funds IS 2035 Target Date Fund (Class 1) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 22.14% | |
| American Funds IS 2035 Target Date Fund (Class 1) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 31.84% | |
| American Funds IS 2035 Target Date Fund (Class 1) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 25.16% | |
| American Funds IS 2035 Target Date Fund (Class 1) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.08% | |
| American Funds IS 2035 Target Date Fund (Class 1) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 7.87% | |
| American Funds IS 2035 Target Date Fund (Class 1) | Total [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2040 Target Date Fund (Class 4) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds IS 2040 Target Date Fund (Class 4) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.45% | |
| American Funds IS 2040 Target Date Fund (Class 4) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 32.06% | |
| American Funds IS 2040 Target Date Fund (Class 4) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 38.17% | |
| American Funds IS 2040 Target Date Fund (Class 4) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.45% | |
| American Funds IS 2040 Target Date Fund (Class 4) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.87% | |
| American Funds IS 2040 Target Date Fund (Class 2) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds IS 2040 Target Date Fund (Class 2) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.45% | |
| American Funds IS 2040 Target Date Fund (Class 2) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 32.06% | |
| American Funds IS 2040 Target Date Fund (Class 2) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 38.17% | |
| American Funds IS 2040 Target Date Fund (Class 2) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.45% | |
| American Funds IS 2040 Target Date Fund (Class 2) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.87% | |
| American Funds IS 2040 Target Date Fund (Class 1A) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds IS 2040 Target Date Fund (Class 1A) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.45% | |
| American Funds IS 2040 Target Date Fund (Class 1A) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 32.06% | |
| American Funds IS 2040 Target Date Fund (Class 1A) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 38.17% | |
| American Funds IS 2040 Target Date Fund (Class 1A) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.45% | |
| American Funds IS 2040 Target Date Fund (Class 1A) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.87% | |
| American Funds IS 2040 Target Date Fund (Class 1) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds IS 2040 Target Date Fund (Class 1) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.45% | |
| American Funds IS 2040 Target Date Fund (Class 1) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 32.06% | |
| American Funds IS 2040 Target Date Fund (Class 1) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 38.17% | |
| American Funds IS 2040 Target Date Fund (Class 1) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.45% | |
| American Funds IS 2040 Target Date Fund (Class 1) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.87% | |
| American Funds IS 2045 Target Date Fund (Class 4) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds IS 2045 Target Date Fund (Class 4) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.08% | |
| American Funds IS 2045 Target Date Fund (Class 4) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 34.69% | |
| American Funds IS 2045 Target Date Fund (Class 4) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 44.90% | |
| American Funds IS 2045 Target Date Fund (Class 4) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.21% | |
| American Funds IS 2045 Target Date Fund (Class 4) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.21% | |
| American Funds IS 2045 Target Date Fund (Class 2) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds IS 2045 Target Date Fund (Class 2) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.08% | |
| American Funds IS 2045 Target Date Fund (Class 2) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 34.69% | |
| American Funds IS 2045 Target Date Fund (Class 2) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 44.90% | |
| American Funds IS 2045 Target Date Fund (Class 2) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.21% | |
| American Funds IS 2045 Target Date Fund (Class 2) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.12% | |
| American Funds IS 2045 Target Date Fund (Class 1A) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds IS 2045 Target Date Fund (Class 1A) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.08% | |
| American Funds IS 2045 Target Date Fund (Class 1A) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 34.69% | |
| American Funds IS 2045 Target Date Fund (Class 1A) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 44.90% | |
| American Funds IS 2045 Target Date Fund (Class 1A) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.21% | |
| American Funds IS 2045 Target Date Fund (Class 1A) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.12% | |
| American Funds IS 2045 Target Date Fund (Class 1) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds IS 2045 Target Date Fund (Class 1) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.08% | |
| American Funds IS 2045 Target Date Fund (Class 1) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 34.69% | |
| American Funds IS 2045 Target Date Fund (Class 1) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 44.90% | |
| American Funds IS 2045 Target Date Fund (Class 1) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.21% | |
| American Funds IS 2045 Target Date Fund (Class 1) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.12% | |
| American Funds IS 2050 Target Date Fund (Class 4) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds IS 2050 Target Date Fund (Class 4) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.12% | |
| American Funds IS 2050 Target Date Fund (Class 4) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 36.74% | |
| American Funds IS 2050 Target Date Fund (Class 4) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 44.90% | |
| American Funds IS 2050 Target Date Fund (Class 4) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.16% | |
| American Funds IS 2050 Target Date Fund (Class 4) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.08% | |
| American Funds IS 2050 Target Date Fund (Class 2) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds IS 2050 Target Date Fund (Class 2) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.12% | |
| American Funds IS 2050 Target Date Fund (Class 2) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 36.74% | |
| American Funds IS 2050 Target Date Fund (Class 2) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 44.90% | |
| American Funds IS 2050 Target Date Fund (Class 2) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.16% | |
| American Funds IS 2050 Target Date Fund (Class 2) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.08% | |
| American Funds® IS 2050 Target Date Fund (Class 1A) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds® IS 2050 Target Date Fund (Class 1A) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.12% | |
| American Funds® IS 2050 Target Date Fund (Class 1A) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 36.74% | |
| American Funds® IS 2050 Target Date Fund (Class 1A) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 44.90% | |
| American Funds® IS 2050 Target Date Fund (Class 1A) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.16% | |
| American Funds® IS 2050 Target Date Fund (Class 1A) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.08% | |
| American Funds® IS 2050 Target Date Fund (Class 1) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds® IS 2050 Target Date Fund (Class 1) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.12% | |
| American Funds® IS 2050 Target Date Fund (Class 1) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 36.74% | |
| American Funds® IS 2050 Target Date Fund (Class 1) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 44.90% | |
| American Funds® IS 2050 Target Date Fund (Class 1) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.16% | |
| American Funds® IS 2050 Target Date Fund (Class 1) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.08% | |
| American Funds® IS 2055 Target Date Fund (Class 4) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds® IS 2055 Target Date Fund (Class 4) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6% | |
| American Funds® IS 2055 Target Date Fund (Class 4) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 36% | |
| American Funds® IS 2055 Target Date Fund (Class 4) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 48% | |
| American Funds® IS 2055 Target Date Fund (Class 4) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10% | |
| American Funds IS 2055 Target Date Fund Class 2 | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds IS 2055 Target Date Fund Class 2 | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6% | |
| American Funds IS 2055 Target Date Fund Class 2 | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 36% | |
| American Funds IS 2055 Target Date Fund Class 2 | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 48% | |
| American Funds IS 2055 Target Date Fund Class 2 | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10% | |
| American Funds® IS 2055 Target Date Fund Class 1A | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds® IS 2055 Target Date Fund Class 1A | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6% | |
| American Funds® IS 2055 Target Date Fund Class 1A | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 36% | |
| American Funds® IS 2055 Target Date Fund Class 1A | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 48% | |
| American Funds® IS 2055 Target Date Fund Class 1A | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10% | |
| American Funds® IS 2055 Target Date Fund Class 1 | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds® IS 2055 Target Date Fund Class 1 | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6% | |
| American Funds® IS 2055 Target Date Fund Class 1 | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 36% | |
| American Funds® IS 2055 Target Date Fund Class 1 | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 48% | |
| American Funds® IS 2055 Target Date Fund Class 1 | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10% | |
| American Funds IS 2060 Target Date Fund (Class 4) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds IS 2060 Target Date Fund (Class 4) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6% | |
| American Funds IS 2060 Target Date Fund (Class 4) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 38% | |
| American Funds IS 2060 Target Date Fund (Class 4) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 46% | |
| American Funds IS 2060 Target Date Fund (Class 4) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10% | |
| American Funds IS 2060 Target Date Fund (Class 2) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds IS 2060 Target Date Fund (Class 2) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6% | |
| American Funds IS 2060 Target Date Fund (Class 2) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 38% | |
| American Funds IS 2060 Target Date Fund (Class 2) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 46% | |
| American Funds IS 2060 Target Date Fund (Class 2) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10% | |
| American Funds IS 2060 Target Date Fund (Class 1A) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds IS 2060 Target Date Fund (Class 1A) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6% | |
| American Funds IS 2060 Target Date Fund (Class 1A) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 38% | |
| American Funds IS 2060 Target Date Fund (Class 1A) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 46% | |
| American Funds IS 2060 Target Date Fund (Class 1A) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10% | |
| American Funds® IS 2060 Target Date Fund (Class 1) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds® IS 2060 Target Date Fund (Class 1) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6% | |
| American Funds® IS 2060 Target Date Fund (Class 1) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 38% | |
| American Funds® IS 2060 Target Date Fund (Class 1) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 46% | |
| American Funds® IS 2060 Target Date Fund (Class 1) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10% | |
| American Funds IS 2065 Target Date Fund (Class 4) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds IS 2065 Target Date Fund (Class 4) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6% | |
| American Funds IS 2065 Target Date Fund (Class 4) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 38% | |
| American Funds IS 2065 Target Date Fund (Class 4) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 46% | |
| American Funds IS 2065 Target Date Fund (Class 4) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10% | |
| American Funds IS 2065 Target Date Fund (Class 2) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds IS 2065 Target Date Fund (Class 2) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6% | |
| American Funds IS 2065 Target Date Fund (Class 2) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 38% | |
| American Funds IS 2065 Target Date Fund (Class 2) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 46% | |
| American Funds IS 2065 Target Date Fund (Class 2) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10% | |
| Target Date Fund Class 1A | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| Target Date Fund Class 1A | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6% | |
| Target Date Fund Class 1A | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 38% | |
| Target Date Fund Class 1A | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 46% | |
| Target Date Fund Class 1A | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10% | |
| American Funds® IS 2065 Target Date Fund CLASS 1 | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds® IS 2065 Target Date Fund CLASS 1 | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6% | |
| American Funds® IS 2065 Target Date Fund CLASS 1 | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 38% | |
| American Funds® IS 2065 Target Date Fund CLASS 1 | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 46% | |
| American Funds® IS 2065 Target Date Fund CLASS 1 | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10% | |
| American Funds® IS 2070 Target Date Fund (Class 4) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds® IS 2070 Target Date Fund (Class 4) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.76% | |
| American Funds® IS 2070 Target Date Fund (Class 4) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 38.10% | |
| American Funds® IS 2070 Target Date Fund (Class 4) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 47.62% | |
| American Funds® IS 2070 Target Date Fund (Class 4) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.52% | |
| American Funds IS 2070 Target Date Fund Class 2 | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds IS 2070 Target Date Fund Class 2 | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.76% | |
| American Funds IS 2070 Target Date Fund Class 2 | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 38.10% | |
| American Funds IS 2070 Target Date Fund Class 2 | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 47.62% | |
| American Funds IS 2070 Target Date Fund Class 2 | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.52% | |
| American Funds IS 2070 Target Date Fund Class 1A | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds IS 2070 Target Date Fund Class 1A | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.76% | |
| American Funds IS 2070 Target Date Fund Class 1A | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 38.10% | |
| American Funds IS 2070 Target Date Fund Class 1A | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 47.62% | |
| American Funds IS 2070 Target Date Fund Class 1A | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.52% | |
| Growth-Income Fund (Class 1) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.67% | |
| Growth-Income Fund (Class 1) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 26.04% | |
| Growth-Income Fund (Class 1) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.53% | |
| Growth-Income Fund (Class 1) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.13% | |
| Growth-Income Fund (Class 1) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.63% | |
| Growth-Income Fund (Class 1) | Bonds, notes and other debt instruments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.01% | |
| Growth-Income Fund (Class 1) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.81% | |
| Growth-Income Fund (Class 1) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.71% | |
| Growth-Income Fund (Class 1) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.47% | |
| Capital World Growth and Income Fund (Class 4) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.02% | |
| Capital World Growth and Income Fund (Class 4) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 22.51% | |
| Capital World Growth and Income Fund (Class 4) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.21% | |
| Capital World Growth and Income Fund (Class 4) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.68% | |
| Capital World Growth and Income Fund (Class 4) | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.18% | |
| Capital World Growth and Income Fund (Class 4) | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.01% | |
| Capital World Growth and Income Fund (Class 4) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.63% | |
| Capital World Growth and Income Fund (Class 4) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.31% | |
| Capital World Growth and Income Fund (Class 4) | Bonds, notes and other debt instruments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.13% | |
| Capital World Growth and Income Fund (Class 4) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.53% | |
| Capital World Growth and Income Fund (Class 4) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.19% | |
| Capital World Growth and Income Fund (Class 4) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.68% | |
| Capital World Growth and Income Fund (Class 4) | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.05% | |
| Capital World Growth and Income Fund (Class 2) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.02% | |
| Capital World Growth and Income Fund (Class 2) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 22.51% | |
| Capital World Growth and Income Fund (Class 2) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.21% | |
| Capital World Growth and Income Fund (Class 2) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.68% | |
| Capital World Growth and Income Fund (Class 2) | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.18% | |
| Capital World Growth and Income Fund (Class 2) | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.01% | |
| Capital World Growth and Income Fund (Class 2) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.63% | |
| Capital World Growth and Income Fund (Class 2) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.31% | |
| Capital World Growth and Income Fund (Class 2) | Bonds, notes and other debt instruments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.13% | |
| Capital World Growth and Income Fund (Class 2) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.53% | |
| Capital World Growth and Income Fund (Class 2) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.19% | |
| Capital World Growth and Income Fund (Class 2) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.68% | |
| Capital World Growth and Income Fund (Class 2) | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.05% | |
| Capital World Growth and Income Fund (class 1A) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.02% | |
| Capital World Growth and Income Fund (class 1A) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 22.51% | |
| Capital World Growth and Income Fund (class 1A) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.21% | |
| Capital World Growth and Income Fund (class 1A) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.68% | |
| Capital World Growth and Income Fund (class 1A) | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.18% | |
| Capital World Growth and Income Fund (class 1A) | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.01% | |
| Capital World Growth and Income Fund (class 1A) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.63% | |
| Capital World Growth and Income Fund (class 1A) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.31% | |
| Capital World Growth and Income Fund (class 1A) | Bonds, notes and other debt instruments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.13% | |
| Capital World Growth and Income Fund (class 1A) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.53% | |
| Capital World Growth and Income Fund (class 1A) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.19% | |
| Capital World Growth and Income Fund (class 1A) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.68% | |
| Capital World Growth and Income Fund (class 1A) | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.05% | |
| Capital World Growth and Income Fund (class I) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.02% | |
| Capital World Growth and Income Fund (class I) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 22.51% | |
| Capital World Growth and Income Fund (class I) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.21% | |
| Capital World Growth and Income Fund (class I) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.68% | |
| Capital World Growth and Income Fund (class I) | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.18% | |
| Capital World Growth and Income Fund (class I) | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.01% | |
| Capital World Growth and Income Fund (class I) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.63% | |
| Capital World Growth and Income Fund (class I) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.31% | |
| Capital World Growth and Income Fund (class I) | Bonds, notes and other debt instruments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.13% | |
| Capital World Growth and Income Fund (class I) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.53% | |
| Capital World Growth and Income Fund (class I) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.19% | |
| Capital World Growth and Income Fund (class I) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.68% | |
| Capital World Growth and Income Fund (class I) | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.05% | |
| American Funds IS 2015 Target Date Fund (Class 1A) | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2015 Target Date Fund (Class 1A) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.07%) | |
| American Funds IS 2015 Target Date Fund (Class 1A) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 49.54% | |
| American Funds IS 2015 Target Date Fund (Class 1A) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 20.21% | |
| American Funds IS 2015 Target Date Fund (Class 1A) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.30% | |
| American Funds IS 2015 Target Date Fund (Class 1A) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.11% | |
| American Funds IS 2015 Target Date Fund (Class 1A) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 18.91% | |
| American Funds IS 2015 Target Date Fund (Class 1) | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2015 Target Date Fund (Class 1) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.07%) | |
| American Funds IS 2015 Target Date Fund (Class 1) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 49.54% | |
| American Funds IS 2015 Target Date Fund (Class 1) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 20.21% | |
| American Funds IS 2015 Target Date Fund (Class 1) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.30% | |
| American Funds IS 2015 Target Date Fund (Class 1) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.11% | |
| American Funds IS 2015 Target Date Fund (Class 1) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 18.91% | |
| American Funds IS 2020 Target Date Fund (Class 4) | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2020 Target Date Fund (Class 4) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.06%) | |
| American Funds IS 2020 Target Date Fund (Class 4) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 45.06% | |
| American Funds IS 2020 Target Date Fund (Class 4) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 22.20% | |
| American Funds IS 2020 Target Date Fund (Class 4) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.29% | |
| American Funds IS 2020 Target Date Fund (Class 4) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.98% | |
| American Funds IS 2020 Target Date Fund (Class 4) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 17.53% | |
| American Funds IS 2020 Target Date Fund (Class 2) | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2020 Target Date Fund (Class 2) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.06%) | |
| American Funds IS 2020 Target Date Fund (Class 2) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 45.06% | |
| American Funds IS 2020 Target Date Fund (Class 2) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 22.20% | |
| American Funds IS 2020 Target Date Fund (Class 2) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.29% | |
| American Funds IS 2020 Target Date Fund (Class 2) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.98% | |
| American Funds IS 2020 Target Date Fund (Class 2) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 17.53% | |
| American Funds IS 2020 Target Date Fund (Class 1A) | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2020 Target Date Fund (Class 1A) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.06%) | |
| American Funds IS 2020 Target Date Fund (Class 1A) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 45.06% | |
| American Funds IS 2020 Target Date Fund (Class 1A) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 22.20% | |
| American Funds IS 2020 Target Date Fund (Class 1A) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.29% | |
| American Funds IS 2020 Target Date Fund (Class 1A) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.98% | |
| American Funds IS 2020 Target Date Fund (Class 1A) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 17.53% | |
| American Funds IS 2020 Target Date Fund (Class 1) | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2020 Target Date Fund (Class 1) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.06%) | |
| American Funds IS 2020 Target Date Fund (Class 1) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 45.06% | |
| American Funds IS 2020 Target Date Fund (Class 1) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 22.20% | |
| American Funds IS 2020 Target Date Fund (Class 1) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.29% | |
| American Funds IS 2020 Target Date Fund (Class 1) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.98% | |
| American Funds IS 2020 Target Date Fund (Class 1) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 17.53% | |
| American Funds IS 2025 Target Date Fund (Class 4) | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2025 Target Date Fund (Class 4) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.05%) | |
| American Funds IS 2025 Target Date Fund (Class 4) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 43.86% | |
| American Funds IS 2025 Target Date Fund (Class 4) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 24.34% | |
| American Funds IS 2025 Target Date Fund (Class 4) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 7.19% | |
| American Funds IS 2025 Target Date Fund (Class 4) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.17% | |
| American Funds IS 2025 Target Date Fund (Class 4) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.49% | |
| American Funds IS 2025 Target Date Fund (Class 2) | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2025 Target Date Fund (Class 2) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.05%) | |
| American Funds IS 2025 Target Date Fund (Class 2) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 43.86% | |
| American Funds IS 2025 Target Date Fund (Class 2) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 24.34% | |
| American Funds IS 2025 Target Date Fund (Class 2) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 7.19% | |
| American Funds IS 2025 Target Date Fund (Class 2) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.17% | |
| American Funds IS 2025 Target Date Fund (Class 2) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.49% | |
| American Funds IS 2025 Target Date Fund (Class 1A) | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2025 Target Date Fund (Class 1A) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.05%) | |
| American Funds IS 2025 Target Date Fund (Class 1A) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 43.86% | |
| American Funds IS 2025 Target Date Fund (Class 1A) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 24.34% | |
| American Funds IS 2025 Target Date Fund (Class 1A) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 7.19% | |
| American Funds IS 2025 Target Date Fund (Class 1A) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.17% | |
| American Funds IS 2025 Target Date Fund (Class 1A) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.49% | |
| American Funds IS 2025 Target Date Fund (Class 1) | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2025 Target Date Fund (Class 1) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.05%) | |
| American Funds IS 2025 Target Date Fund (Class 1) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 43.86% | |
| American Funds IS 2025 Target Date Fund (Class 1) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 24.34% | |
| American Funds IS 2025 Target Date Fund (Class 1) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 7.19% | |
| American Funds IS 2025 Target Date Fund (Class 1) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.17% | |
| American Funds IS 2025 Target Date Fund (Class 1) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.49% | |
| American Funds IS 2030 Target Date Fund (Class 4) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.20%) | |
| American Funds IS 2030 Target Date Fund (Class 4) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 32.39% | |
| American Funds IS 2030 Target Date Fund (Class 4) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 27.93% | |
| American Funds IS 2030 Target Date Fund (Class 4) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 18.42% | |
| American Funds IS 2030 Target Date Fund (Class 4) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.36% | |
| American Funds IS 2030 Target Date Fund (Class 4) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.10% | |
| American Funds IS 2030 Target Date Fund (Class 4) | Total [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2030 Target Date Fund (Class 2) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.20%) | |
| American Funds IS 2030 Target Date Fund (Class 2) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 32.39% | |
| American Funds IS 2030 Target Date Fund (Class 2) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 27.93% | |
| American Funds IS 2030 Target Date Fund (Class 2) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 18.42% | |
| American Funds IS 2030 Target Date Fund (Class 2) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.36% | |
| American Funds IS 2030 Target Date Fund (Class 2) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.10% | |
| American Funds IS 2030 Target Date Fund (Class 2) | Total [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2030 Target Date Fund (Class 1A) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.20%) | |
| American Funds IS 2030 Target Date Fund (Class 1A) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 32.39% | |
| American Funds IS 2030 Target Date Fund (Class 1A) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 27.93% | |
| American Funds IS 2030 Target Date Fund (Class 1A) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 18.42% | |
| American Funds IS 2030 Target Date Fund (Class 1A) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.36% | |
| American Funds IS 2030 Target Date Fund (Class 1A) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.10% | |
| American Funds IS 2030 Target Date Fund (Class 1A) | Total [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2070 Target Date Fund Class 1 | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | [2] |
| American Funds IS 2070 Target Date Fund Class 1 | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.76% | |
| American Funds IS 2070 Target Date Fund Class 1 | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 38.10% | |
| American Funds IS 2070 Target Date Fund Class 1 | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 47.62% | |
| American Funds IS 2070 Target Date Fund Class 1 | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.52% | |
| Portfolio Series - American Funds Managed Risk Global Allocation Portfolio Class P2 | Options purchased [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.10% | |
| Portfolio Series - American Funds Managed Risk Global Allocation Portfolio Class P2 | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.82% | [1] |
| Portfolio Series - American Funds Managed Risk Global Allocation Portfolio Class P2 | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.01% | |
| Portfolio Series - American Funds Managed Risk Global Allocation Portfolio Class P2 | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 20.02% | |
| Portfolio Series - American Funds Managed Risk Global Allocation Portfolio Class P2 | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 25.03% | |
| Portfolio Series - American Funds Managed Risk Global Allocation Portfolio Class P2 | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 20.01% | |
| Portfolio Series - American Funds Managed Risk Global Allocation Portfolio Class P2 | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5% | |
| Portfolio Series - American Funds Managed Risk Global Allocation Portfolio Class P2 | Asset allocation funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.01% | |
| Portfolio Series - American Funds Managed Risk Growth and Income Portfolio Class P2 | Options purchased [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.13% | |
| Portfolio Series - American Funds Managed Risk Growth and Income Portfolio Class P2 | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.94% | [1] |
| Portfolio Series - American Funds Managed Risk Growth and Income Portfolio Class P2 | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.99% | |
| Portfolio Series - American Funds Managed Risk Growth and Income Portfolio Class P2 | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 49.96% | |
| Portfolio Series - American Funds Managed Risk Growth and Income Portfolio Class P2 | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10% | |
| Portfolio Series - American Funds Managed Risk Growth and Income Portfolio Class P2 | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.99% | |
| Portfolio Series - American Funds Managed Risk Growth and Income Portfolio Class P2 | Asset allocation funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.99% | |
| Portfolio Series - American Funds Managed Risk Growth Portfolio Class P2 | Options purchased [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.14% | |
| Portfolio Series - American Funds Managed Risk Growth Portfolio Class P2 | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.91% | [1] |
| Portfolio Series - American Funds Managed Risk Growth Portfolio Class P2 | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 19.99% | |
| Portfolio Series - American Funds Managed Risk Growth Portfolio Class P2 | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 19.98% | |
| Portfolio Series - American Funds Managed Risk Growth Portfolio Class P2 | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 54.98% | |
| Portfolio Series - American Funds Growth and Income Portfolio Class 4 | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| Portfolio Series - American Funds Growth and Income Portfolio Class 4 | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.08%) | |
| Portfolio Series - American Funds Growth and Income Portfolio Class 4 | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 30% | |
| Portfolio Series - American Funds Growth and Income Portfolio Class 4 | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 40.06% | |
| Portfolio Series - American Funds Growth and Income Portfolio Class 4 | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.03% | |
| Portfolio Series - American Funds Growth and Income Portfolio Class 4 | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.98% | |
| Portfolio Series - American Funds Growth and Income Portfolio Class 4 | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10% | |
| Portfolio Series - American Funds Growth and Income Portfolio Class 4 | Asset allocation funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.01% | |
| Portfolio Series - American Funds Global Growth Portfolio Class 4 | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| Portfolio Series - American Funds Global Growth Portfolio Class 4 | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.08%) | |
| Portfolio Series - American Funds Global Growth Portfolio Class 4 | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 20.04% | |
| Portfolio Series - American Funds Global Growth Portfolio Class 4 | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 80.04% | |
| Managed Risk Asset Allocation Fund Class P2 | Options purchased [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.04% | |
| Managed Risk Asset Allocation Fund Class P2 | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.69% | [1] |
| Managed Risk Asset Allocation Fund Class P2 | Asset allocation funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 95.27% | |
| Managed Risk Asset Allocation Fund Class P1 | Options purchased [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.04% | |
| Managed Risk Asset Allocation Fund Class P1 | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.69% | [1] |
| Managed Risk Asset Allocation Fund Class P1 | Asset allocation funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 95.27% | |
| Managed Risk Growth-Income Fund (Class P2) | Options purchased [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.21% | |
| Managed Risk Growth-Income Fund (Class P2) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.79% | [1] |
| Managed Risk Growth-Income Fund (Class P2) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15% | |
| Managed Risk Growth-Income Fund (Class P2) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 80% | |
| Managed Risk Growth-Income Fund (Class P1) | Options purchased [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.21% | |
| Managed Risk Growth-Income Fund (Class P1) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.79% | [1] |
| Managed Risk Growth-Income Fund (Class P1) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15% | |
| Managed Risk Growth-Income Fund (Class P1) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 80% | |
| Managed Risk Washington Mutual Investors Fund (Class P2) | Options purchased [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.14% | |
| Managed Risk Washington Mutual Investors Fund (Class P2) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.90% | [1] |
| Managed Risk Washington Mutual Investors Fund (Class P2) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10% | |
| Managed Risk Washington Mutual Investors Fund (Class P2) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 84.96% | |
| Managed Risk Washington Mutual Investors Fund (Class P1) | Options purchased [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.14% | |
| Managed Risk Washington Mutual Investors Fund (Class P1) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.90% | [1] |
| Managed Risk Washington Mutual Investors Fund (Class P1) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10% | |
| Managed Risk Washington Mutual Investors Fund (Class P1) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 84.96% | |
| Managed Risk International Fund (Class P2) | Options purchased [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.76% | |
| Managed Risk International Fund (Class P2) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.94% | [1] |
| Managed Risk International Fund (Class P2) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.93% | |
| Managed Risk International Fund (Class P2) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 84.37% | |
| Managed Risk International Fund (Class P1) | Options purchased [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.76% | |
| Managed Risk International Fund (Class P1) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.94% | [1] |
| Managed Risk International Fund (Class P1) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.93% | |
| Managed Risk International Fund (Class P1) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 84.37% | |
| Managed Risk Growth Fund (Class P2) | Options purchased [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.17% | |
| Managed Risk Growth Fund (Class P2) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.84% | [1] |
| Managed Risk Growth Fund (Class P2) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10% | |
| Managed Risk Growth Fund (Class P2) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 84.99% | |
| Managed Risk Growth Fund (Class P1) | Options purchased [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.17% | |
| Managed Risk Growth Fund (Class P1) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.84% | [1] |
| Managed Risk Growth Fund (Class P1) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10% | |
| Managed Risk Growth Fund (Class P1) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 84.99% | |
| U.S. Government Securities Fund (Class 4) | Mortgage-backed obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 59.12% | |
| U.S. Government Securities Fund (Class 4) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 34.36% | |
| U.S. Government Securities Fund (Class 4) | Federal agency bonds & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.24% | |
| U.S. Government Securities Fund (Class 4) | Options purchased [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.03% | |
| U.S. Government Securities Fund (Class 4) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.25% | [1] |
| U.S. Government Securities Fund (Class 3) | Mortgage-backed obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 59.12% | |
| U.S. Government Securities Fund (Class 3) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 34.36% | |
| U.S. Government Securities Fund (Class 3) | Federal agency bonds & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.24% | |
| U.S. Government Securities Fund (Class 3) | Options purchased [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.03% | |
| U.S. Government Securities Fund (Class 3) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.25% | [1] |
| U.S. Government Securities Fund (Class 2) | Mortgage-backed obligations [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 59.12% | |
| U.S. Government Securities Fund (Class 2) | US Treasury bonds and notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 34.36% | |
| U.S. Government Securities Fund (Class 2) | Federal agency bonds & notes [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.24% | |
| U.S. Government Securities Fund (Class 2) | Options purchased [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.03% | |
| U.S. Government Securities Fund (Class 2) | Short term securities and other assets less liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.25% | [1] |
| Washington Mutual Investors Fund (Class 4) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.48% | |
| Washington Mutual Investors Fund (Class 4) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 21.86% | |
| Washington Mutual Investors Fund (Class 4) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.59% | |
| Washington Mutual Investors Fund (Class 4) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.73% | |
| Washington Mutual Investors Fund (Class 4) | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 7.87% | |
| Washington Mutual Investors Fund (Class 4) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.86% | |
| Washington Mutual Investors Fund (Class 4) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.03% | |
| Washington Mutual Investors Fund (Class 4) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.97% | |
| Washington Mutual Investors Fund (Class 4) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.34% | |
| Washington Mutual Investors Fund (Class 4) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.27% | |
| Washington Mutual Investors Fund (Class 2) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.48% | |
| Washington Mutual Investors Fund (Class 2) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 21.86% | |
| Washington Mutual Investors Fund (Class 2) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.59% | |
| Washington Mutual Investors Fund (Class 2) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.73% | |
| Washington Mutual Investors Fund (Class 2) | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 7.87% | |
| Washington Mutual Investors Fund (Class 2) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.86% | |
| Washington Mutual Investors Fund (Class 2) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.03% | |
| Washington Mutual Investors Fund (Class 2) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.97% | |
| Washington Mutual Investors Fund (Class 2) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.34% | |
| Washington Mutual Investors Fund (Class 2) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.27% | |
| Washington Mutual Investors Fund (Class 1A) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.48% | |
| Washington Mutual Investors Fund (Class 1A) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 21.86% | |
| Washington Mutual Investors Fund (Class 1A) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.59% | |
| Washington Mutual Investors Fund (Class 1A) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.73% | |
| Washington Mutual Investors Fund (Class 1A) | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 7.87% | |
| Washington Mutual Investors Fund (Class 1A) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.86% | |
| Washington Mutual Investors Fund (Class 1A) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.03% | |
| Washington Mutual Investors Fund (Class 1A) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.97% | |
| Washington Mutual Investors Fund (Class 1A) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.34% | |
| Washington Mutual Investors Fund (Class 1A) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.27% | |
| C000023924 [Member] | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.48% | |
| C000023924 [Member] | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 21.86% | |
| C000023924 [Member] | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.59% | |
| C000023924 [Member] | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.73% | |
| C000023924 [Member] | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 7.87% | |
| C000023924 [Member] | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.86% | |
| C000023924 [Member] | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.03% | |
| C000023924 [Member] | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.97% | |
| C000023924 [Member] | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.34% | |
| C000023924 [Member] | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.27% | |
| New World Fund (Class 4) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.78% | |
| New World Fund (Class 4) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 16.46% | |
| New World Fund (Class 4) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.18% | |
| New World Fund (Class 4) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.95% | |
| New World Fund (Class 4) | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.75% | |
| New World Fund (Class 4) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.12% | |
| New World Fund (Class 4) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.18% | |
| New World Fund (Class 4) | Bonds, notes and other debt instruments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.45% | |
| New World Fund (Class 4) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.82% | [1] |
| New World Fund (Class 4) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.65% | |
| New World Fund (Class 4) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.75% | |
| New World Fund (Class 4) | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.36% | |
| New World Fund (Class 2) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.78% | |
| New World Fund (Class 2) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 16.46% | |
| New World Fund (Class 2) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.18% | |
| New World Fund (Class 2) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.95% | |
| New World Fund (Class 2) | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.75% | |
| New World Fund (Class 2) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.12% | |
| New World Fund (Class 2) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.18% | |
| New World Fund (Class 2) | Bonds, notes and other debt instruments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.45% | |
| New World Fund (Class 2) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.82% | [1] |
| New World Fund (Class 2) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.65% | |
| New World Fund (Class 2) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.75% | |
| New World Fund (Class 2) | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.36% | |
| New World Fund (Class 1A) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.78% | |
| New World Fund (Class 1A) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 16.46% | |
| New World Fund (Class 1A) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.18% | |
| New World Fund (Class 1A) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.95% | |
| New World Fund (Class 1A) | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.75% | |
| New World Fund (Class 1A) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.12% | |
| New World Fund (Class 1A) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.18% | |
| New World Fund (Class 1A) | Bonds, notes and other debt instruments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.45% | |
| New World Fund (Class 1A) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.82% | [1] |
| New World Fund (Class 1A) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.65% | |
| New World Fund (Class 1A) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.75% | |
| New World Fund (Class 1A) | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.36% | |
| New World Fund (Class 1) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.78% | |
| New World Fund (Class 1) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 16.46% | |
| New World Fund (Class 1) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.18% | |
| New World Fund (Class 1) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.95% | |
| New World Fund (Class 1) | Consumer Staples Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.75% | |
| New World Fund (Class 1) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.12% | |
| New World Fund (Class 1) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.18% | |
| New World Fund (Class 1) | Bonds, notes and other debt instruments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.45% | |
| New World Fund (Class 1) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.82% | [1] |
| New World Fund (Class 1) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.65% | |
| New World Fund (Class 1) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.75% | |
| New World Fund (Class 1) | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.36% | |
| International Fund (Class 4) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.71% | |
| International Fund (Class 4) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.14% | |
| International Fund (Class 4) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.89% | |
| International Fund (Class 4) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 17.53% | |
| International Fund (Class 4) | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.89% | |
| International Fund (Class 4) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.99% | |
| International Fund (Class 4) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.36% | |
| International Fund (Class 4) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.22% | |
| International Fund (Class 4) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.15% | |
| International Fund (Class 4) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.05% | |
| International Fund (Class 4) | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.07% | |
| International Fund (Class 3) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.71% | |
| International Fund (Class 3) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.14% | |
| International Fund (Class 3) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.89% | |
| International Fund (Class 3) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 17.53% | |
| International Fund (Class 3) | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.89% | |
| International Fund (Class 3) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.99% | |
| International Fund (Class 3) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.36% | |
| International Fund (Class 3) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.22% | |
| International Fund (Class 3) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.15% | |
| International Fund (Class 3) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.05% | |
| International Fund (Class 3) | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.07% | |
| International Fund (Class 2) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.71% | |
| International Fund (Class 2) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.14% | |
| International Fund (Class 2) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.89% | |
| International Fund (Class 2) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 17.53% | |
| International Fund (Class 2) | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.89% | |
| International Fund (Class 2) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.99% | |
| International Fund (Class 2) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.36% | |
| International Fund (Class 2) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.22% | |
| International Fund (Class 2) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.15% | |
| International Fund (Class 2) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.05% | |
| International Fund (Class 2) | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.07% | |
| International Fund (Class 1A) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.71% | |
| International Fund (Class 1A) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.14% | |
| International Fund (Class 1A) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.89% | |
| International Fund (Class 1A) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 17.53% | |
| International Fund (Class 1A) | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.89% | |
| International Fund (Class 1A) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.99% | |
| International Fund (Class 1A) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.36% | |
| International Fund (Class 1A) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.22% | |
| International Fund (Class 1A) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.15% | |
| International Fund (Class 1A) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.05% | |
| International Fund (Class 1A) | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.07% | |
| International Fund (Class 1) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.71% | |
| International Fund (Class 1) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.14% | |
| International Fund (Class 1) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.89% | |
| International Fund (Class 1) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 17.53% | |
| International Fund (Class 1) | Energy Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.89% | |
| International Fund (Class 1) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.99% | |
| International Fund (Class 1) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.36% | |
| International Fund (Class 1) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.22% | |
| International Fund (Class 1) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.15% | |
| International Fund (Class 1) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.05% | |
| International Fund (Class 1) | Materials Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.07% | |
| Growth Fund (Class 4) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.96% | |
| Growth Fund (Class 4) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 23.92% | |
| Growth Fund (Class 4) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.97% | |
| Growth Fund (Class 4) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.92% | |
| Growth Fund (Class 4) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.85% | |
| Growth Fund (Class 4) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.28% | |
| Growth Fund (Class 4) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.05% | |
| Growth Fund (Class 4) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.21% | |
| Growth Fund (Class 4) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 19.84% | |
| Growth Fund (Class 3) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.96% | |
| Growth Fund (Class 3) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 23.92% | |
| Growth Fund (Class 3) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.97% | |
| Growth Fund (Class 3) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.92% | |
| Growth Fund (Class 3) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.85% | |
| Growth Fund (Class 3) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.28% | |
| Growth Fund (Class 3) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.05% | |
| Growth Fund (Class 3) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.21% | |
| Growth Fund (Class 3) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 19.84% | |
| Growth Fund (Class 2) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.96% | |
| Growth Fund (Class 2) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 23.92% | |
| Growth Fund (Class 2) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.97% | |
| Growth Fund (Class 2) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.92% | |
| Growth Fund (Class 2) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.85% | |
| Growth Fund (Class 2) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.28% | |
| Growth Fund (Class 2) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.05% | |
| Growth Fund (Class 2) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.21% | |
| Growth Fund (Class 2) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 19.84% | |
| Growth Fund (Class 1A) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.96% | |
| Growth Fund (Class 1A) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 23.92% | |
| Growth Fund (Class 1A) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.97% | |
| Growth Fund (Class 1A) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.92% | |
| Growth Fund (Class 1A) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.85% | |
| Growth Fund (Class 1A) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.28% | |
| Growth Fund (Class 1A) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.05% | |
| Growth Fund (Class 1A) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.21% | |
| Growth Fund (Class 1A) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 19.84% | |
| Growth Fund (Class 1) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.96% | |
| Growth Fund (Class 1) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 23.92% | |
| Growth Fund (Class 1) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.97% | |
| Growth Fund (Class 1) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.92% | |
| Growth Fund (Class 1) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.85% | |
| Growth Fund (Class 1) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.28% | |
| Growth Fund (Class 1) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.05% | |
| Growth Fund (Class 1) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.21% | |
| Growth Fund (Class 1) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 19.84% | |
| Global Small Capitalization Fund (Class 4) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.66% | |
| Global Small Capitalization Fund (Class 4) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.63% | |
| Global Small Capitalization Fund (Class 4) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.74% | |
| Global Small Capitalization Fund (Class 4) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 26.37% | |
| Global Small Capitalization Fund (Class 4) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.72% | |
| Global Small Capitalization Fund (Class 4) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.61% | |
| Global Small Capitalization Fund (Class 4) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.06% | |
| Global Small Capitalization Fund (Class 4) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 16.21% | |
| Global Small Capitalization Fund (Class 2) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.66% | |
| Global Small Capitalization Fund (Class 2) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.63% | |
| Global Small Capitalization Fund (Class 2) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.74% | |
| Global Small Capitalization Fund (Class 2) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 26.37% | |
| Global Small Capitalization Fund (Class 2) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.72% | |
| Global Small Capitalization Fund (Class 2) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.61% | |
| Global Small Capitalization Fund (Class 2) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.06% | |
| Global Small Capitalization Fund (Class 2) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 16.21% | |
| Global Small Capitalization Fund (Class 1A) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.66% | |
| Global Small Capitalization Fund (Class 1A) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.63% | |
| Global Small Capitalization Fund (Class 1A) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.74% | |
| Global Small Capitalization Fund (Class 1A) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 26.37% | |
| Global Small Capitalization Fund (Class 1A) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.72% | |
| Global Small Capitalization Fund (Class 1A) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.61% | |
| Global Small Capitalization Fund (Class 1A) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.06% | |
| Global Small Capitalization Fund (Class 1A) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 16.21% | |
| Global Small Capitalization Fund (Class 1) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.66% | |
| Global Small Capitalization Fund (Class 1) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.63% | |
| Global Small Capitalization Fund (Class 1) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.74% | |
| Global Small Capitalization Fund (Class 1) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 26.37% | |
| Global Small Capitalization Fund (Class 1) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 14.72% | |
| Global Small Capitalization Fund (Class 1) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.61% | |
| Global Small Capitalization Fund (Class 1) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.06% | |
| Global Small Capitalization Fund (Class 1) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 16.21% | |
| Global Growth Fund (Class 4) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.78% | |
| Global Growth Fund (Class 4) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 28.32% | |
| Global Growth Fund (Class 4) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.42% | |
| Global Growth Fund (Class 4) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.56% | |
| Global Growth Fund (Class 4) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.02% | |
| Global Growth Fund (Class 4) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.22% | |
| Global Growth Fund (Class 4) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.30% | |
| Global Growth Fund (Class 4) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.67% | |
| Global Growth Fund (Class 4) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.71% | |
| Global Growth Fund (Class 2) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.78% | |
| Global Growth Fund (Class 2) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 28.32% | |
| Global Growth Fund (Class 2) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.42% | |
| Global Growth Fund (Class 2) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.56% | |
| Global Growth Fund (Class 2) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.02% | |
| Global Growth Fund (Class 2) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.22% | |
| Global Growth Fund (Class 2) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.30% | |
| Global Growth Fund (Class 2) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.67% | |
| Global Growth Fund (Class 2) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.71% | |
| American Funds IS 2010 Target Date Fund (Class 1A) | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2010 Target Date Fund (Class 1A) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.08%) | |
| American Funds IS 2010 Target Date Fund (Class 1A) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 50.09% | |
| American Funds IS 2010 Target Date Fund (Class 1A) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 16.41% | |
| American Funds IS 2010 Target Date Fund (Class 1A) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.20% | |
| American Funds IS 2010 Target Date Fund (Class 1A) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 24.38% | |
| American Funds IS 2010 Target Date Fund (Class 1) | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2010 Target Date Fund (Class 1) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.08%) | |
| American Funds IS 2010 Target Date Fund (Class 1) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 50.09% | |
| American Funds IS 2010 Target Date Fund (Class 1) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 16.41% | |
| American Funds IS 2010 Target Date Fund (Class 1) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.20% | |
| American Funds IS 2010 Target Date Fund (Class 1) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 24.38% | |
| American Funds IS 2015 Target Date Fund (Class 4) | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2015 Target Date Fund (Class 4) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.07%) | |
| American Funds IS 2015 Target Date Fund (Class 4) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 49.54% | |
| American Funds IS 2015 Target Date Fund (Class 4) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 20.21% | |
| American Funds IS 2015 Target Date Fund (Class 4) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.30% | |
| American Funds IS 2015 Target Date Fund (Class 4) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.11% | |
| American Funds IS 2015 Target Date Fund (Class 4) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 18.91% | |
| American Funds IS 2015 Target Date Fund (Class 2) | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2015 Target Date Fund (Class 2) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.07%) | |
| American Funds IS 2015 Target Date Fund (Class 2) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 49.54% | |
| American Funds IS 2015 Target Date Fund (Class 2) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 20.21% | |
| American Funds IS 2015 Target Date Fund (Class 2) | Growth Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.30% | |
| American Funds IS 2015 Target Date Fund (Class 2) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.11% | |
| American Funds IS 2015 Target Date Fund (Class 2) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 18.91% | |
| American Funds IS 2010 Target Date Fund (Class 4) | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2010 Target Date Fund (Class 4) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.08%) | |
| American Funds IS 2010 Target Date Fund (Class 4) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 50.09% | |
| American Funds IS 2010 Target Date Fund (Class 4) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 16.41% | |
| American Funds IS 2010 Target Date Fund (Class 4) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.20% | |
| American Funds IS 2010 Target Date Fund (Class 4) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 24.38% | |
| American Funds IS 2010 Target Date Fund (Class 2) | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| American Funds IS 2010 Target Date Fund (Class 2) | Other Assets Less Liabilities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.08%) | |
| American Funds IS 2010 Target Date Fund (Class 2) | Fixed income fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 50.09% | |
| American Funds IS 2010 Target Date Fund (Class 2) | Growth And Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 16.41% | |
| American Funds IS 2010 Target Date Fund (Class 2) | Balanced fund [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.20% | |
| American Funds IS 2010 Target Date Fund (Class 2) | Equity Income Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 24.38% | |
| Global Growth Fund (Class 1A) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.78% | |
| Global Growth Fund (Class 1A) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 28.32% | |
| Global Growth Fund (Class 1A) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.42% | |
| Global Growth Fund (Class 1A) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.56% | |
| Global Growth Fund (Class 1A) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.02% | |
| Global Growth Fund (Class 1A) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.22% | |
| Global Growth Fund (Class 1A) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.30% | |
| Global Growth Fund (Class 1A) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.67% | |
| Global Growth Fund (Class 1A) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.71% | |
| Global Growth Fund (Class 1) | Financial Services Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.78% | |
| Global Growth Fund (Class 1) | Information Technology Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 28.32% | |
| Global Growth Fund (Class 1) | Healthcare Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 15.42% | |
| Global Growth Fund (Class 1) | Industrial Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.56% | |
| Global Growth Fund (Class 1) | Unclassified Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.02% | |
| Global Growth Fund (Class 1) | Other Securities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.22% | |
| Global Growth Fund (Class 1) | Short Term Securities And Other Assets Less Liabilities 1 [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.30% | |
| Global Growth Fund (Class 1) | Consumer Discretionary Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.67% | |
| Global Growth Fund (Class 1) | Communications Sector [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.71% | |
| [1]Includes derivatives.[2]Less than 0.01%. | ||
